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Rna Interference Regulates Gene Expression
Chapter 1: Introduction
1.1 RNA interference regulates gene expression in eukaryotes
The flow of genetic information within a living organism was first stated by Crick as "DNA makes
RNA and RNA makes protein" (Crick 1956). In response to environmental stimuli, the dynamic
modulation of specific gene products (mRNAs and proteins) confers flexibility and adaptability to
prokaryotes, eukaryotes, and viruses (Crick 1956). Proper gene regulation is essential for cell
growth, development, proliferation, and differentiation, which also lead to the creation of distinct
cell types and cell cycle stages that share the same genome but exhibit different gene expression
profiles (Chen and Rajewsky 2007). The increase or decrease of a certain gene ... Show more
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1998). Interestingly, the phenomenon that the introduction of double–stranded RNAs "quelled" the
expression of endogenous genes contain homologous sequences had been observed and even
utilized as a tool to knock down gene expression by researchers long before the underlying RNAi
mechanism was identified and separated from the antisense silencing by Fire and Mello in 1998
(Fire et al. 1998). They consistently found that the introduction of double–stranded RNAs (dsRNAs)
was 100 or more folds effective than the single–stranded "sense" or "antisense" RNAs (ssRNA) to
silence the complement gene expression (Fire et al. 1998; Kennerdell and Carthew 1998). Moreover,
the dsRNA mediated gene silencing can be transferred between adjacent cells, and even inherited
through multiple rounds of cell division (Fire et al. 1998). Therefore, it is proposed that this so
called "RNA interference" is an inheritable and transferrable process that involves a catalytic
process, which differs from the previously known antisense silencing that ssRNAs directly bind to
the complement mRNA targets to repress translation by blocking ribosome access. Subsequently,
Tuschl and co–workers demonstrated that RNAi mechanism exists in mammalian cell lines for the
introduction of synthetic
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Modulating Gene Expression with Multiple Intermediate Steps
Gene expression can be modulated by multiple intermediate steps, including transcription, post–
transcriptional modifications, RNA splicing, translation, and post–translational modifications;
transcription being the first step and a key mechanism for regulating gene expression.
Transcriptional control is mediated through promoters and regulatory elements, which are all
essential for spatiotemporally correct gene expression. Genome organization has been undoubtedly
linked with regulation of gene expression through global analyses of mammalian genomes. Previous
hypotheses suggested that genome is arranged as independently regulated chromosomal domains
flanked by boundary elements (i.e. insulators). This might be true in compact genomes of organisms
such as yeasts (e.g. S. cerevisiae 12.1 Mb), where an uninterrupted genomic segment (i.e. regulatory
expression unit) is formed comprising of a particular gene and its regulatory elements. Nevertheless,
in more complex genomes such as those of humans (H. sapiens 3.2 Gb) and mouse (M. musculus
2.7 Gb) the situation is substantially more complex, where genes and their regulatory elements can
be dispersed over many hundreds of kilobases. These observations concur with current hypotheses,
where cis–regulatory elements including Locus Control Regions (LCRs), enhancers, silencers, and
insulators, may be dispersed over tens to thousands of kilobases. Furthermore, cis–regulatory
elements of one gene are commonly embedded within a neighbour
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The Discovery That Double Stranded Rna Can Efficiently...
The discovery that double–stranded RNA can efficiently silence gene expression (RNA interference,
RNAi) was made by Andrew Fire and Craig Mello in 1998 in the worm C. elegans (Fire et al.,
1998). It has since been hailed as one of the most important innovations in modern molecular
medicine and accordingly, the pair were awarded the Nobel Prize in Medicine and Physiology in
2006. This discovery opened up a whole new field of biological research which has impacted all
aspects of medicine including neuroscience. The reason underlying this is that RNAi is now one of
the most powerful and widely used tools to selectively inactivate gene expression. This technique
has been used not only to enhance our understanding of gene function, but also as ... Show more
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RNAi challenges this notion by demonstrating that RNA can also disrupt this flow of genetic
information and prevent protein expression. Since 1998 the exact mechanism of RNAi has been
thoroughly investigated, and it has been shown that the RNAi machinery, known as RNA–induced
silencing complex (RISC), is activated when two fragments of RNA combine to form double–
stranded RNA (Ramachandran et al., 2013). RISC then binds to one of these RNA fragments, which
acts as a template allowing RISC to search for its complementary sequence on the target mRNA. As
such, this fragment is known as the guide or 'antisense' strand (Wang et al., 2011). When RISC
detects its matching sequence, the target mRNA is cleaved by certain nucleases or degraded by the
cellular machinery, which effectively prevents translation of the transcript and silences expression of
the protein (Wang et al., 2011). As described, the initial step in this process relies on the formation
of an RNA duplex, which can occur in two pathways. Firstly, dsRNA can form in an endogenous
manner due to the presence of non–coding regulatory RNA called micro (mi)RNA. miRNAs were
discovered in the early 2000s as a result of Fire and Mello's work, and they function as important
post–transcriptional
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Expression Of The Long Non Coding Rna
Expression of the long non–coding RNA Sox2ot during postnatal developmental of the rat brain
Introduction
Long non–coding RNAs (lncRNAs) make up a large portion of cellular transcripts in the
mammalian transcriptome (Clark and Blackshaw 2014) . In all human transcripts, at least 10,000
non–coding RNAs are thought to be greater than 200 base pairs (bps) in length, with little to no
coding capacity, and are therefore classed as lncRNAs (Zhu et al. 2013; Clark and Blackshaw 2014).
In some cases, transcripts can reach up to 9kb but, on average, are around 500–1000 bases long
(Chakraborty et al. 2014). For an RNA to be classed as long non–coding RNA, open reading frames
(ORFs) must be no longer than 100 amino acids, although some studies have ... Show more content
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This tissue specificity has been attributed to the presence of transposable elements at transcription
start sites (Fatica and Bozzoni 2014).
Origins of lncRNA
LncRNAs can arise from several different processes; for example, it is possible for local tandem
repeat sequences and retro–transposition of non–coding RNA to create lncRNAs (Lee 2012; Clark
and Blackshaw 2014). Disruption of coding proteins gene frames can also result in lncRNAs, such
as Lnx3 from the Xist gene (Zhu et al. 2013). The formation of new lncRNAs can also arise from
the decay of protein coding genes, duplication of other lncRNAs or de novo evolution from previous
noncoding sequences, the last of which is the most common (Kapusta and Feschotte 2014). A large
proportion of lncRNAs, around 60% in human and murine ES cells, are synthesised from
bidirectional transcription at protein coding promoter sites (Kapusta and Feschotte 2014). Other
factors that result in the synthesis of lncRNA include transposable elements (TE); in fact, 2 out of 3
lncRNAs transcripts in humans and mice contain at least one TE sequence, which can be found in
20–40% of all lncRNA exonic nucleotides (Kapusta and Feschotte 2014).
General functions and conservation of lncRNA
The functions of lncRNA have not been widely
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The Facial Expression Of Saint Paul The Hermit And Saint...
Whether Mona Lisa is smiling or not has become one of the most interesting debates in the world.
Some artists think the facial expression of Mona Lisa is smiling, the others, nevertheless, believe it
is only an expressionless face with a hollow stare. Why this happened is not a weird phenomenon.
One often judges a thing with her/his personal experiences, and distinct experiences make different
individuals generate diverse ideas, just like Shakespeare's words, "there are a thousand Hamlets in a
thousand people's eyes". Furthermore, art is the product of people's thoughts in different periods,
and painting is one manifestation of art because every product reflects the contemporary religious
thoughts and historical activities. Someone who appreciates a painting would not only relate to
historical period but also combine the modern ideas. Thus, when people enjoy a painting, they
always have different opinions with others because everyone sees a different world. To analyze a
painting needs to focus on many factors, like color differences, expression of facial emotions, and
pose overlooking. Therefore, two paintings which are Saint Paul the Hermit and Saint Jerome can be
distinguished in terms of three aspects, different color of paintings, unlike facial expressions, and
same living environment in the painting.
First of all, the colors used in the paintings, Saint Paul the Hermit and Saint Jerome, are quite
different. The dominant hue of the first one is dark, and another is
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Facial Expressions
A History on Universal Facial Expressions: The Works of Lamarck, Izard and Russell Kathleen
Coyne–Boyles From the time of the ancient Greeks through to the modern age, understanding and
interpreting man's emotions and body language have been a source of both fasicnation and a point of
intellectual debate. The ancient philosophers, such as Aristotle, proposed the idea that the face takes
on varying appearances which are characteristic of each of the passions (or emotions) of humankind.
The famous Greek masks of the theatre embody exaggerated facial expressions in order to dramatize
the great joys and tragedies of human existence. Artists throughout history have worked to capture
facial expression while philosophers have debated about ... Show more content on Helpwriting.net
...
In this way, the son inherits this soft characteristic and the facial expression becomes a feature of
soft inheritance. In Use and Disuse Theory, adaptation in a species occurs because complex force
drives organisms further up a ladder of increasing complexity. Then, environmental force adapts
organisms to their local environment. Adaptation evolves by using some characteristics more than
others based upon differing environments. Those characteristics not used or needed as much drop
off and those needed to suit a particular environment are passed on. In some ways, the so–called
Ghost of Lamarck left its impressions upon Darwin and sparked a debate among evolutionary
theorists as to whether characteristics like facial expressions are socially learned skills which can be
inherited by the next generation or if they are universal and slowly evolving, purely biologically
programmed responses to basic human survival. Universality of Facial Expressions Darwinian
thought holds that facial expressions are universal in nature and evolved in man alongside his basic
struggle for survival. These facial expressions developed in order to protect and keep the species
alive. One example would be that a tribe watches a woman take a bite out of a poisonous plant and
observes her face as she shows disgust or pain. Watching this response, the tribe knows not to taste
this plant because this facial expression has long been biologically ingrained
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Paul Ekman and His Study on Facial Expressions
Paul Ekman was born in 1934 and at age 14 his mother committed suicide after suffering from
severe bi–polar disorder. At that point, he decided he wanted to study facial expressions of emotion
in order to assist other people before such tragic outcomes occurred. By the time he was 15, he had
enrolled in University of Chicago and became interested in group therapy. He earned his Bachelor's
degree in 1954 and in 1958 he had earned his Ph.D. in clinical psychology at Adelphi University.
His Master's thesis was about the study of facial expressions and body movement. From 1960 to
2004 he worked at the University of California and starting in 1963 he received continual research
grants from the National Institute of Mental Health for 40 years to study nonverbal behavior.
Paul Ekman was influenced by Charles Darwin's book titled, The Expression of Emotions in Man
and Animals, originally published in 1872. Charles Darwin used photos, drawings and body postures
from animals and humans and compared them with facial expressions and emotions. For instance, a
growling dog has many facial features similar to an angry human. "Darwin argued that the existence
of these similarities demonstrates that emotional expression must have evolved through natural
selection in the same way that other characteristics evolved. He further contended that the
expressions must serve a function; they enhance survival of the organism". (Reevy, G. 2010
Encyclopedia of Emotion (Vol. 2, pp. 410–411). I believe
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An Organism 's Capacity Regulate Gene Expression
First, you will summarize the relevant background that leads up to the hypothesis to be tested in this
paper.
An organism 's capacity to regulate gene expression in the response to ecological elements, for
instance, nourishments levels and oxygen accessibility is basic for survival. Taking to account that
sirtuin genes act to regulate protein expression by two distinct mechanisms: deacetylation of
histones proteins, leading to tighter chromatin packaging and therefore decreased transcription; or
deacetylation of various other proteins, leading to inactivation. The first experiment implicating
sirtuin genes in aging was done in yeast cells. This experiment showed, overexpression of sir2
protein in yeast led to an increase in lifespan. From ... Show more content on Helpwriting.net ...
Later, researchers integrated geEx1 (geIn1, geIn2) and geEx2 (geIn3), which had an increase in sir–
2.1 compared to N2. These integrated lines showed the same lifespan as extrachromosomal arrays.
Authors then conclude, as in yeast, expanding the dose of a SIR2 gene augments the lifespan of C.
elegans.
Research further knocked down daf 16 to examine if sir2.1 augments the lifespan by causing
mutations in the insulin–like signalling pathway, which is suppressed by daf 16. The findings
showed, animals, which did not have daf 16, lived shorter. Researchers then conclude, sir–2.1,
requires DAF–16 for lifespan extension. Also, it appears to function in the insulin signaling pathway
shown to regulate aging and dauer formation in C. elegans. .
● Identify and discuss the underlying assumptions that must be true in order for either the
conclusion and/or experimental evidence to be sound and valid.
One of the underlying assumptions is, aging is regulated by genes, and overexpression of sir2 in
yeast leads to an increase in lifespan. Another assumption is, aging is a universal and genuine
process and its mechanisms are conserved in all organisms. Consequently, researchers specifically
examined the dosage of sir2 proteins in C.elegans. Moreover, it is also assumed that all the animals
tested, are under
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Facial Expressions, Personal Appearance, Detecting Deception
If I had to pick three lessons that impacted me the most this semester I'd have to choose: Facial
Expressions, Personal Appearance and Detecting Deception. I always thought I was good at reading
people but I soon realized that I, just like most people in society today, jump to conclusions that can
cause a lot of confusion. I have never been able to keep control of my facial expressions. I roll my
eyes constantly and wear my feelings on my face, as some people have told me. I never thought it
was that much of an issue until taking this class. I realized that I could be coming across as a
completely different person and be judged based on that assumption by someone. "In a real sense,
our quest for meaning in this world begins and ends with facial expression" (Eaves and Leathers
25). This line stuck out to me more than anything else in this chapter, making me realize how much
I need to work on making sure I come across the way I am wanting to. I also have been working on
"reading" further into people's facial expressions, to see if it could help me in understanding the real
reason for their attitudes. Since I plan on being a counselor in the future I feel that really being able
to read someone will help me be able to dig deeper into some of their issues. I have always tried my
hardest to not judge someone by their outward appearance. When I do catch myself though, it can
usually be read on my face. Reading the chapter on personal appearance showed me that although
we as a
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The Effect Of Cd44 Expression On Drug Resistance And Cell...
Ijeoma Unachukwu
PI: Dr. Kyle Murphy
Fall 2014 The Effect of CD44 Expression on Drug–Resistance and Cell Migration in the Zebra Fish
Xenotransplant Model Abstract
Introduction
Xenotransplanting is an effective tool to look at the profileration and metastisi of cancer cells.
Traditionally, xenotransplant experiments have been done in mice, but for this experient we used
zebra fish. Xenotransplantation in mice can be timlely and costly and often times inefficient.
Zebrafish on the other hand have can reproduce quicly and have similar systems to that of humans.
One of the main benefits of using zebrafish a cancer xenotransplant model is that they do not
develop an adaptive immune system until 14 days after post fertilization. This makes it possible for
human cancer cells to survive when they are injected into the zebrafish embryos. (Evaluating human
cancer cell metastasis in zebrafish Yong Teng, Xiayang Xie, Steven Walker, David T White, Jeff S
Mumm and John K Cowell).Recent papers have already proven the similarities between human and
zebrafish liver tumors at a molecular level. Also, studies have created carcinogen induced neoplasms
that resemble human timors in zebra fish and they have metastasized. In every situation, human
cancer cells and tissue have survived and proliferated in zebra fish provinf that it is a comparative
tumor model. Not only can xenotransplanted zebrafish can support the normal development of the
host and proliferation of transplanted human melanoma
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The Expressions Of Identity
Expressions of Identity
It is worth noting how individuals express themselves differently in various settings, the binary
between public and private provides people with different ways of behaving.
"Given public behaviour is regulated by contemporary equity laws, individuals may feel obliged to
curb the public expression of their personal prejudices, only articulating them in 'privatised' spaces
(such as home) where they know their opinions will be shared and that even if challenged, will have
no wider consequences for the individual." (Valentine 2013: 6)
Without a doubt people have to limit their behaviour in public as a result of methods of control such
as CCTV and police presence, thus the home becomes a space where individuals can truly express
themselves. However, the home consequently becomes a setting in which other behaviours take
place that would not be deemed acceptable if performed in the public gaze. ... Show more content on
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Tolman and Raphael (2000) emphasise that domestic violence is extremely highly documented
among poorer women, although it is an issue that can affect anyone, low– earning women
particularly in the global south face these problems. Again, linking back to the binary opposition of
Public and Private, Smith (1989) argues that it is the very fact that it is concealed from the public
eye and often unknown to people outside of immediate family that makes the issue difficult to deal
with. There is no surveillance and therefore this issue becomes difficult to deal with compared to if
it was taking place in public
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Flipping The Switch : How Cells Use Rna Regulate Genes...
Dr. Tina Henkin's seminar "Flipping the switch: How cells use RNA to regulate genes expression",
was outlined by four general questions. The first question addressed in the seminar was "Why study
Microbes?". The next, "Why study bacterial gene regulation?". The third question, "What are the
basics of gene expression?". Finally, "What's special about riboswitches?". Dr. Henkin addressed
these questions throughout her seminar, which eventually led into to more specific questions of gene
expression and predicted hypotheses of her model. However, to understand these more specific
questions and predictions it is crucial to understand the first four questions outlined in the beginning
of the seminar.
The question "Why study Microbes?", is an ... Show more content on Helpwriting.net ...
In addition, many of the drugs available to treat infectious disease actually originate from bacteria
and fungi. In Biology, constant inquiry of the mechanisms of life lead to new discoveries every day.
Clearly, microbes are very important for studying and understanding our world. Dr. Henkin stressed
their importance in the seminar, specifically the study of bacteria and bacteria's manipulation of
gene expression.
The next two questions, "Why study bacterial gene regulation?" and "What are the basics of gene
expression?" were addressed next in the seminar. Fascinatingly, a bacterial cell knows how to
respond based on their environment. For example, they recognize and respond differently when in
water than in a human. The average bacterial cell has close to 1000 genes, this is significantly more
genetic information that they can use at any given time. These genes are stored in the DNA and each
individual gene provides the information to make an individual product. So, how is a gene
expressed? The first step in this process is called transcription. During transcription, the information
encoded in the DNA is copied by RNA Polymerase to make mRNA. The next step is referred to as
translation. During translation, the information in the mRNA is "translated" to make a protein using
the ribosome. These steps basically turn genes "on and off" in a bacterial cell in response to a
change in their environment. How does this happen? According to Dr. Henkin in her 2008
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Free Speech : Limiting The Speech And Expression For Students
Limiting the speech and expression on campus for students, speakers, and anyone else related to a
campus and its activities ultimately impairs their voice and takes away some of the power they are
constitutionally guaranteed. In fact, 54% of students have stopped themselves from sharing an idea
or opinion in class and 29% have stopped themselves from sharing on campus outside of class
because they are scared that their ideas are incorrect or offensive ("Student Attitudes Free Speech
Survey"). At public colleges, all students are supposed to be protected by the First Amendment, yet
students still feel uncomfortable expressing their opinion should it go against the majority. Instead
of exercising their human right, they submit to the actions which have implied that the silencing of
some is ok. The sad fact is that students and speakers still don't feel safe having their own opinions
at their own school, making them submissive which can likely carry on throughout their life. One
example of the restriction of student's speech was when a student group at Arkansas Tech decided to
roll a ball around campus telling people to write whatever they wanted on the "free speech ball."
Even as a public university, security forced them to keep the event within a free speech zone,
restricting the speech and expression of everyone involved ("Arkansas Tech University: Student").
Restriction of speech occurred again when New Mexico State University charged a student group a
$300 security
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Expressed Sequence Tags (ESTs) versus Serial Analysis of...
Expressed Sequence Tags (ESTs) versus Serial Analysis of Gene Expression (SAGE)
INTRODUCTION Expressed sequence tag or also known as EST are 200 to 800 unedited
nucleotide bases in length, and randomly selected single pass sequence reads which are derived
from the cDNA libraries while serial analysis of gene expression or SAGE have more shorter
sequence tags with only 10 to 20 base pairs. But even it is short it still have enough information to
uniquely identify a transcript, especially if it is obtained from a unique position in each of the
transcripts. Serial analysis of gene expression is a method or technique designed to gain a direct and
quantitative measure of overall gene expression pattern. It is basically a sequence based ... Show
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ETS also can determine definitively the number of copies of each transcript per cell and highlight
any differential gene expression. EST includes an inefficient sequencing step, in which one
sequencing process yields only one cDNA sequence. Although the more recent methods of
hybridization based analyses (DNA microarray) using immobilized cDNAs (Schena et al., 1995) or
oligonucleotides (Lockhart et al., 1996) can potentially examine the expression patterns of a
relatively large number of genes, the method can only examine expressed sequences that have
already been identified. In contrast, the SAGE method allows for a quantitative and simultaneous
analysis of a large number of transcripts in any particular cells or tissues, without prior knowledge
of the genes (Velculescu et al., 1995).
METHODOLOGY The SAGE method is based on the isolation of unique sequence tags from
individual mRNAs and concatenation of tags serially into long DNA molecules for lump sum
sequencing. It can be applied to the studies exploring virtually any kinds of biological phenomena in
which the changes in cellular transcription are responsible. SAGE is based mainly on three
principles, firstly, a short sequence tags, 10 to 15 base pairs contains sufficient information to
uniquely identify a transcript provided that the tag is obtained from a unique position within each
transcript to allow the efficient sequencing analysis. Secondly
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Gene Expression And Bacterial Transformation Essay
Introduction: This unit had two labs that developed on the same basic idea: gene expression in
bacteria. Gene expression is a highly regulated process in which cells either allow or prevent a
certain trait to be shown in the next generation of offspring. One major proponent looked at in the
first lab was the DNA plasmid. A DNA plasmid is a short, circular sequence of DNA nucleotides
that are common in bacteria, but are rarely found in larger organisms. The plasmids are useful in that
they introduce new genetic instructions into bacteria cells. In the case of this lab, the new genetic
instruction was that of the Green Fluorescent Protein, better known as GFP. This protein was
monitored throughout the experiments as the gene that was expressed or prevented. Along with GFP,
these plasmids would often pass along a selection gene like beta–lactamase that would allow for the
gene to be expressed in specific environments. One example of such an environment is an
ampicillin–rich environment. Day one's lab focused on bacterial transformation. This process is the
way in which new DNA is introduced into a bacteria cell. In this process, the bacterial cells need to
be made permeable through treatments by way of heat or by mixing with different salts. Once the
bacteria cells are made permeable, the plasmid can introduce the genetic instructions used for GFP
in the cells. Those that are made permeable have a much higher tendency to express the protein. The
discussion
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Regular Expression Of A Web App
Regular Expression To FSM– Web App
3.1 Algorithm
3.1.1 Regular Expression Parsing
I built my own parser which will suit the recursive nature of my regular expression to Finite State
Machine Algorithm. To parse the regular expression, first, the expression is converted from infix to
prefix form. To convert from prefix to infix form, the string is read from the back and on meeting an
operator, it is pushed to an operator stack if top of operator stack has lower precedence than the read
operator else pop it to append to front of output string. If an operand is met, simply append it to
beginning of the output string.
After converting the expression to prefix, second step is to construct expression tree where each
inner node including root node has operator as its value and the leaf nodes are operands. The entire
infix string is read from the end. If the character is an operand it is pushed to the operand stack else
if an operator is read, operands are popped from the operand stack and assigned as left and right
child of node with having the operator as the node value and pushed again into the stack. Since the
backward construction algorithm is recursive in nature, such a syntax tree makes it more suitable for
the algorithm where expression will be taken as input.
3.1.2 Regular Expression To FSM– Backward Construction
After converting input expression to prefix and constructing expression tree, next steps is to
implement the Backward Construction algorithm for
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Genetic Expression In Gene Expression
In gene expression DNA, the blueprint of life is transcribed into RNA, a nucleic acid that acts as a
messenger carrying instructions that control the synthesis of proteins. Gene expression is vital to
determining cell functions and exactly how much protein should be produced by the cell. The
process in which the end proteins are modified can also be manipulated by researchers. The types of
cells which are typically handled in laboratories include prokaryotes. Escherichia coli is a bacteria
found in the human digestive system, preventing other pathogens from residing. Certain E. coli
strains can be pathogenic and can lead to food poisoning, urinary tract infections, pneumonia, and
gastrointestinal infections. Ampicillin is an antibiotic ... Show more content on Helpwriting.net ...
During this study, plasmids with ampicillin resistance (pAMP) known as pUC18, were manipulated
due to their stability in extreme environments. The pUC18 plasmid pAMP gene codes for the
production of beta–lactamase, an enzyme utilized in the breakdown of ampicillin. Once E. coli
obtains this gene, it is able to survive in an environment that is ampicillin–rich. Lux plasmids were
the second type used to provide bioluminescence in the cultures of E. coli grown. The lux plasmid
contains genetic material which codes for luciferase, an enzyme which catalyzes bioluminescence, a
light–emitting reaction. This is considered the marker where transformation efficiency can be
analyzed through the light emissions.
Several techniques were implemented in this study to improve E. coli bacterias competency, the
ability for a cell to uptake genetic material. These procedures were necessary considering the
bacteria does not allow for transformation so efficiently in natural circumstances. Since it lacks the
ability to do so, the uptake of material would be limited despite the preventative measures taken. To
neutralize the negatively charged DNA in E. coli, the use of CaCl2 (sodium chloride), a positively
charged solution, dissociates the calcium from chloride, which enters the cells and alters the charge.
This process is known as electroporation. This causes the bacteria cells to swell and the calcium
molecules help adjust the cell membrane to become
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Facial Expression : An Import Source Of Information
Ranma Budlong
Paper I: Facial Expression,
1: The face is an import source of information when trying to decide on the attitude or mood of a
person. Eye contact is very important. Whether or not the person has eye contact or not is a factor. If
someone breaks eye contact they may be embarrassed or trying to decide on what to say. A major
amount of information is received by the two parties exchanging eye contact. Eye contact indicates
if a person wants to communicate or not. If someone looks as you approach, it is a safe bet they do
not want to communicate. If a person looks in your eyes, then they wish to communicate.
The eyes are the "mirror of the sole". The eyes can be either hard and staring or soft and
affectionate. Then there are ... Show more content on Helpwriting.net ...
How a person stands, the position of the arms and legs needs to be considered. The stiffer a stance
and crossed arms could be extreme anger. However the person could be just cold and trying to stay
warm. Chattering teeth would be a good way as well as temperature to determine the case. The eyes
not making contact at first do not mean as much. They can changed when the person notices another
entering the room. I should point out that the ears are important as well. When very angry peoples
ears often turn red. To get a proper "reading" a person needs to look at the entire body. Are their
arms at their sides, on their sides or crossed? Taken with the face and eye contact it tells the story.
II: I am going to use my deceased wife as my life experience. She was always very easy to read
whether happy, sad, angry, and very angry and it is time to leave the room and house as quickly as
possible. I remember the day we meet in 1997. A mutual friend though we would make a good
couple and we meet in a neutral place.
She was standing by the table and looked into my eyes when I saw her. She had soft interested eyes,
a slight smile on her face and she was standing tall but not stiff. She looked at me in the eyes at
once. She hid her feelings better than me. My heart was thumping in my chest but I exchanged eye
contact with her. My mouth started a bit open almost in shock to warm up very quickly. My eyes
were glowing with affection. During our first controlled
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The Human Expression And Micro Expressions
Photographers Know the Details
Most photographers are more than capable of taking a technically great image. However, teaming up
with a headshot photographer to help with your personal branding is one of the best investments you
can make. We sweat the details:
The human expression and micro–expressions Body language and positioning Finding your best
angles Making sure your clothing, hair and makeup work seamlessly together
It's All About Experience
Check any prior portrait experiences you've had at the door. Our session will be collaborative,
immersive and interactive. You'll even walk away with a few techniques to look your best in any
photo going forward. Head over to Your Session to learn about looks, coaching, ... Show more
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Exceptions can be made, but note that the exceptions generally deal with earrings (diamond studs or
less). Our aim is to get a clean, timeless look with a great expression.
Makeup: Begin with a clean palette – cleanse, exfoliate and moisturize your face on the day of our
shoot. Please don't overdo your foundation. Avoid using anything that has SPF protection in it as it'll
make you look washed out under flash photography due to reflected light. Your basic daily use of
mascara (as long as it's not underneath your eyes), blush and shadow should be fine (nothing wild),
and stay away from smoky eyes. Make sure anything that goes on your lips isn't shiny and reflective
– remember, the focus is on your eyes, not your lips that have gone nuclear!
Hair – Women: Please make sure your hair is ready in the way that you would normally like to
present yourself and, if you would like, bring any of your products with you that you may need
during the shoot, including hair ties since there is a chance you will have a ponytail at some point.
We won't change things up much since hair is a personal preference thing, but it never hurts to be a
little prepared.
Hair – Men: There isn't much to go over on this one. All of the points outlined above apply here,
although for those that often bounce between facial hair and clean cut, you might want to have your
razor handy for a switch mid–shoot.
Headshots for Businesses
Company 'About Us' pages are among the most visited on the Internet. Your
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The Expression Of Phenylthiocarbamide
The expression of phenylthiocarbamide is very questionable concept given such a diverse and vast
population of people living on earth with only a 0.1 of difference genetic. Phenylthiocarbamide is
white fine powder that when ingest an individual can taste bitterness or nothing. In the mouth, there
is gene called TAS2R that encodes for bitter taste receptor. The experiment will test the expression
of TAS2R gene using phenylthiocarbamide or PTC on a selected population of Florida International
University students for the recognition of bitterness or absent. Twenty–four undergraduate students
of Florida International University will be participating in the experiment where height, age, sex,
and ethnicity is negligible. In concept of evolution,
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Freedom of Expression
That there are rights to which people are entitled by virtue of their humanity is not a novel idea. The
statement in italic above surely has been presented throughout history as an archetype of this
concept, specifically noting freedom of expression as a right to which all hold possession. The
assertion of this right is well represented in the Unites States Bill of Rights. Within that document
the First Amendment specifically restricts governmental powers prohibiting any such law or act
from abbreviating our freedom of speech . This keystone to the American Democratic System
spawns dialogue and discourse which forms policy, law, procedure, and so on. I truly believe that
the aforementioned claim is accurate; everyone has the right to ... Show more content on
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There is a growing population of parents and educators that suggest game companies shouldn't be
allowed to create violent games or to include sexual content . If we do allow our concept of agency
to include companies or organizations then can we allow a restriction on the creativity of game
makers? If everyone, including game makers, has the right to express themselves then it would seem
that censorship, beyond the parental rating systems, would violate that right.
However, consider special interest groups and large corporations that provide campaign funding to
particular candidates in governmental elections. In 2010, the US Supreme Court ruled that the
government "could not ban political spending by corporations in candidate elections ." This means
that some of the most powerful organizations on the planet can exercise their freedom for expression
by providing unlimited funding to support candidates that further their business's agenda. For all
intents and purposes, those who accept conditional special interest funding possess the capacity to
campaign with greater intensity, allowing them exposure other candidates fail to get. These
candidates run the risk of being indebted to the 20% of the population that control 90% of the
financial wealth in the US . It would seem that these corporations, while granted freedom of
expression, hold great influence over candidates in US elections. This means that the 80% of the
population, which hold 10% of the US financial
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Functions Of The Mechanism Of Gene Expression
Researchers daily utilize the knowledge of the mechanism of gene expression, allowing them to
operate in different areas. An example is the imposition of certain conditions to micro–organisms,
which are capable of producing drugs or induce cells to function properly, which is of great
importance in medicine. Great emphasis is placed on control systems based on proteins but recently
research started to also focus on the use of systems based on RNA, which is equally as polypeptides
involved in the regulation of processes such as transcription, mRNA degradation and translation.
Ribonucleic acid can regulate gene expression by the presence of the particles in the chain, where
the individual parts are complementary to each other and can form hydrogen bonds therebetween to
form a secondary structures. TRANSCRIPTION transcriptionis the first stage of gene expression. Its
mechanism is based on rewriting the genetic information contained in the nucleotide sequence of the
DNA strand to the RNA. The process can be divided into the initiation, elongation and termination.
In a first step, an RNA polymerase binds to the denatured template locally at the site promoter.
Then, in elongation step, it adds more ribonucleotides, complementay to the DNA strand, to the
nascent mRNA in the 5 '→ 3 '. The process terminates at terminacyjnym, which mostly is
characterized by regions complementary to each other, resulting in the formation of secondary
structure in a transcript hairpin [5]. In
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Importance Of Subjective Modality
1. What is the problem?
The main problem of the topic is that subjective modality can be expressed not only through
commonly known and most frequently used modals and auxiliaries such as modal verbs, but through
other means, such as adjectives, nouns, adverbs etc.
According to Solganik, subjective modality is present in all levels of language. In the lexicology, it's
a variety of evaluative means; in morphology – modal linking words, particles, pronouns, etc. Even
in semantics of case, modality occurs. The most important role that modality plays is in syntax. Not
only does subjective modality contributes to semantics, but also to the functioning of syntactical
units and speech production.
2. A broad study of the question.
Modality is a linguistic manifold phenomenon. It is a broad expression of the speaker's opinions
toward the situation or event, it expresses the relations between the utterance and reality. Semantics
of subjective modality does not only include intellectual ability and ability to reason, but it also
includes different types of emotional reaction.
There are several classifications of modality where subjective mood occurs: deontic and epistemic.
Epistemic modality. The word "epistemic" came from Greek, meaning `knowledge'. According to
Palmer (2001), speakers use epistemic modality in order to express their judgments about the facts,
they use it in when they utter or write their attitude. Epistemic modality concerns what is necessary
or possible based on
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Fresh Expressions
[1]
As you may know, the Port Philip West Presbytery to which we belong is doing Regenerating the
Church Strategy as its main agenda.
To do this task, Fresh Expressions, a new form of church, was selected as its main paradigm and
strategy.
Before coming to this parish, I didn't know much about Fresh Expressions.
In the meanwhile, I have learnt about it through attending Mission Shaped Ministry course once a
month and reading related materials personally.
In addition, I started semi–structured interview project to know our members' ideas of this issue, and
figure out what to start and where to begin within our context.
Through these interviews, I found that most participants don't know much about the concept of
Fresh Expressions like me.
Since ... Show more content on Helpwriting.net ...
For a long time the church has been the centre for worshiping and praying to God; we couldn't
imagine Christianity without the church building in our community.
[3]
However, postmodernism has changed the situation dramatically.
Postmodernism has massively influenced most fields of human activities including art, literature,
anthropology, politics, economics, philosophy, religion, film, architecture, and so on.
It's not easy to define postmodernism in a word as there are various factions of postmodern thought
depending on different areas.
But these theories share the view that there are limits to human knowledge, so there is no absolute
truth.
They argue that there is only relative, subjective value according to differences in perception and
consideration.
Thus, contemporary people try to reinterpret what we have believed with different perspectives and
approaches, focusing on imagination rather than on rationality.
Influenced by this postmodern relativism and secularism, many people become sceptical to absolute
truth revealed in the Bible and are leaving the church very quickly especially in western
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Comparing Differential Gene Expression Of The European...
YOUR NAME: Ruan Rupasinha
NAME OF GROUP MEMBERS: Ruan Rupasinha, Danny Hoskins, James McCusker, Oliver
Tancred, Josh Davis, Joe Howes, Giselle Edge
TITLE OF RESEARCH PROJECT PROPOSAL: Comparing differential gene expression of the
European honey bee Apis mellifera and the Asian honey bee Apis Cerana when infected with Varroa
destructor
SCIENTIFIC ABSTRACT:
The European honey bee Apis mellifera is in serious decline as colonies worldwide are wiped out by
the Varroa mite, Varroa destructor. Even though many colonies die out once infected there is
significant variation observed in the time that it takes, leading to the assumption that some colonies
may be resistant to the mite. In this proposed experiment genes responsible for resistance would be
identified in the Asian honey bee and would then be used to identify similar genes in the European
honey bee. Hives infested with the Varroa mite would be tested to ascertain the levels of up–
regulation and down–regulation of the target genes. The hypothesis is that various genes will be up
and down–regulated in both species, not necessarily the same ones. RT–PCR would be used to
identify the alleles responsible for immunity in both species. Once resistant strains of Apis Mellifera
have been identified they would be tested for resistance via exposure to the Varroa mite. The
discovery of resistant strains of Apis Mellifera would allow for selective breeding to be carried out
to increase the species numbers, which is why this
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What Are The Basics Of Gene Expression?
The major research questions addressed in the presentation consisted of: why to study microbes? ,
What are the basics of gene expression? , What's special about riboswitches? The major hypotheses
that were explored during the presentation were "S box" represses genes involved in the synthesis of
methionine and SAM in response to the high SAM concentration; and the low SAM results in the
readthrough of the termination site. Also "How can gene expression be regulated" and under what
conditions/processes the bacterial cells could use to detect environmental signals, specifically Dr.
Henkin talks about some of the predictions of the model, which another hypothesis is "If we reduce
SAM concentrations in the cell would we see increased gene expression"? Also would the increase
in expression be from the effects on translation? Dr. Henkin used a variety of the methods to study
the topic including a power point presentation in which she organized the information she was going
to talk about in front of the class. The specific method used in the presentation was the S box
riboswitch structural model, and the different types of S box riboswitches. (SAM). She started the
presentation talking about how bacterial cells have more genetic information than they use at any
given time, and explained the basics of gene expression. Dr. Henkin explained the many important
steps that the expression undergoes. Starting with step 1, transcription occurs which is the
expression of a gene requiring the
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Conflict In Graphic Novel Persepolis
Satrapi's graphic novel, Persepolis, depicts the coming of age story of Marjane and her experiences
before, during, and after the Iranian war. In the course of Marjane's experiences, she frequently
encounters conflict and the hardships that ensue when growing up. Nevertheless, these hardships are
major factors that shape Marjane as a character and establish the context of the novel. Satrapi uses
the graphic novel conventions and literary devices to convey conflicts of Marjane that are within
herself, with man (in the form of her teachers), and with society.
Firstly, pages 70–71 demonstrate Marjane's inner conflict with her emotions, beliefs, and mind after
the loss of her uncle. In order to convey the grief, Marjane feels, Satrapi draws a ... Show more
content on Helpwriting.net ...
The women's branch notice Marjane and chastise her for wearing inappropriate clothing. Through
this scene, it reveals the difference of Marjane's opinions against the government's and the society.
In the first panel, the dealers' speech bubbles don't have fully closed boundaries. This indicates that
words aren't said at normal output and they are whispering. Since they are whispering, it signifies
that buying tapes need to be kept confidential. Furthermore, in the second to the third panel, both
Marjane and the dealer have serious expressions; panels' backgrounds are black; and both characters
turn their heads too quickly observe their surroundings. These actions suggest the requirement for
caution and secrecy, which indicate that severe punishment occurs to those they catch buying and
dealing tapes. Although Satrapi expresses the dangers of these actions, Marjane takes the risk to buy
tapes and oppose the law. This proves her strong opposition to the government's laws and beliefs.
Satrapi also illustrates the women's branch as tall, wearing all black, and having angry expressions,
which express dominance and power over Marjane. Marjane's mouth is also shaped like squiggles,
which express her worry and fear of the women's branch. By Illustrating the women's branch as
someone dominant and fearful, signifies how hateful these women are and
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Do Facial Expressions And Body Expression
Research question: Do facial expression and body posture determine whether or not students find
another student approachable? Hypothesis: Students who exhibit positive nonverbal behaviours such
as a content and/or smiling facial expression and an open, straight posture will attract more social
interactions and people will be more likely to sit near them than students who have a serious and/or
solemn expression and a closed, slouched posture. 2. Two references in APA format Blairy, S.,
Herrera, P., & Hess, U. (1999). Mimicry and the judgement of emotional facial expressions. Journal
of Nonverbal Behaviour, 23(1), 5–41. doi:10.1023/A:1021370825283 Lamer, S.A., Reeves, S.L., &
Weisbuch, M. (2015). The nonverbal environment of self–esteem: Interactive effects of facial–
expression and eye–gaze on perceivers' self–evaluations. Journal of Experimental Social
Psychology, 56, 130–138. doi:10.1016/j.jesp.2014.09.010 3. Method: Content facial expression: Any
expression that is natural, with no indication of discomfort and/or unpleasantness, and in which the
person's features (e.g. eyebrows, eyes, lips, nose) are relaxed. In other words, a content facial
expression is one that is neutral. Smiling: Any facial expression that exhibits amusement and
pleasantness, with lifted cheeks, and the corners of one's mouth lifted upwards (with or without teeth
showing). Open posture: One in which the limbs extend away from the torso. In other words, I will
be interpreting an exposed torso
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Expressions of Nonverble Communication
+
What you do speaks so loud that I cannot hear what you say.
Ralph Waldo Emerson
Before Email and Facebook, Tweets and Instagram, Charles Darwin set out to prove that human
expressions were much like those of an animal. The furrowing of brow, baring of teeth and flaring of
nostrils are actions that are displayed in both humans and animals alike. Picture a hungry wolf
defending its cubs. The head is lowered, the eyes are narrowed and the teeth are bared. Now think of
actor in a play or movie or on television portraying a violent man demanding acquiescence of a
victim during a crime. His postures, the eyes, the nostrils, the teeth, are much the same as an animal.
Darwin had the strong inclination that emotions are tied to physical ... Show more content on
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Their method of study was called context analysis. These three men watched films in slow motion
and noted facial expressions, hand gestures, and posture to see the correlation between these actions.
They were experts on understanding how people react without having to hear a thing. Birdwhistell
later coined the term kinesics or nonverbal communication. During his study, he determined that
human can recognize over 250,000 facial expressions. This is an astonishing fact that many neglect
in the fast paced world we now live in. 1960 brought further studies that included eye contact,
personal space and how expectations can be affected by subtle nonverbal messages.
So how do all of these studies affect people today? This knowledge can be used to influence your
behavior in an interview for that dream job that you're looking for. Being knowledgeable about
nonverbal communication might help you get a date with that person you've always wanted to go
out with. What if you are running for a political office? Wouldn't you like to know which posture,
gestures or expressions will make you appear to be the right candidate? We'll look at several ways
that you can use nonverbal communication to make you more successful in all aspects of your life.
First of all, did you know that people form an opinion of someone that they meet within the first
seven seconds? Researchers at New York University
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Investigating Estrogen Effects On Myc And Pvt1 Expression
Investigating Estrogen Effects on MYC and PVT1 Expression in Breast Cancer Using Mouse
Models
Background
In the United States, breast cancer is currently the second most common cancer in women. The
National Institute of Health states that one in every eight women will develop breast cancer in her
lifetime (1). Furthermore, it is estimated by the American Cancer Institute that approximated 41,000
people died of breast cancer in the United States during 2015 (2). Since breast cancer is such a
prevalent concern in society today, current and future research will help direct the treatment and
detection of the disease.
Studies have shown that high estrogen levels correspond with an increased risk for breast cancer in
mammalian species (3). The hormone estrogen plays a key role in mammary gland development by
binding to the estrogen receptor, which has previously been identified as a transcription factor. In
normal cells, when estrogen binds to the receptor, a dimer forms and a conformational change
occurs. The estrogen receptor travels to the nucleus where its DNA binding domain interacts with a
DNA sequence found in the promoter of several genes. The estrogen receptor must form a complex
with various proteins prior to initiation of transcription. In cancerous cells, the estrogen receptor
becomes overly–activated by estrogen and leads to tumor formation via multiple mechanisms (3).
Myelocytomatosis (Myc) and plasmacytoma variant transcription 1 (Pvt1) are two genes that were
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Facial Expressions
Facial expressions in my life are the best describer of how I feel and think about a situation. Most of
my friends would say that I am a positive person that smiles when I am around other people;
however, my resting face looks like I am mad at the world. I did realize this until someone took a
picture and I was in the background looking utterly disgusted with life. Also, my facial expressions
are extremely exaggerated; for instance, when I am surprised it is full on, mouth open and eyes
wide. My friends tell me that when someone is speaking that I do not agree with or dislike, that it
will make expressions of confusion or disgust. I am working on changing that, because it is
important to have a neutral face in the professional world. Another ... Show more content on
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Your tone, volume, and quality, of my voice gives the person I am communicating with great insight
into how I am doing. For instance, if I am about to cry the quality of my voice becomes shaky,
choppy, and jumps to a higher pitch. My family always knew when I was upset because before the
tears started to form, these other nonverbal characteristics began to take place. Also, when I become
angry my tone of voice is more direct and how a louder volume to make sure the person understand
that I am upset. You can have an angry tone, but then that can fade into a frustrated tone that is
similar in sound. Moreover, I must have certain tones for different people groups that I am
communicating with. When I am talking to one of my professors or instructors, I try to sound
confident and direct in how I am communicating. In contrast, when I am speaking to my friends or
family, I am enthusiastic, loud, and speak at a faster rate. When I become nervous or excited about a
topic, the rate of my speech sometimes becomes so fast that my mouth cannot keep up with the
words I am thinking. For example, I was chaplain of my senior class and I had to pray at an honors
day for my graduating class. When I finished, I thought that I was smooth and calm and spoke with
a slower rate; however, my friends informed me that they did not understand a word that I said.
People could tell that I was nervous, even though I was actively try to change the way that I spoke in
that moment. Therefore, all aspects of voice play a role in nonverbal communication. It allows a
message to me transmitted clearly, instead of reading a text that can be interpreted in numerous
ways. It allows people to study how confident I am in what I am saying, or to know when I am upset
with
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A Note On Gs Expression System
a) GS expression system is used to select high–express cells, where glutamine synthetase (GS) is
used as a selectable marker. Normal functioned cell produce use glutamate and ammonium to
produce glutamine, with the presence of glutamine synthetase. To select, firstly, glutamine was
eliminated from culture media as the selective pressure. Only cell with strong expression potential
can overcome this condition. The cells survived this selection then proceeded to the second
selection, where methionine sulphoxamine (MSX) was added into the media. MSX is a specific
inhibitor of GS that stop normal GS function. Therefore, only cells whose plasmid contains both the
gene of interest and a copy the glutamine synthetase (GS) gene can survive this condition. Due to
the presence of GS gene in their plasmid, the glutamine synthesis was not halted in these survived
high–expresser cells. These cells were hence selected for cell–line production.
b) The specific productivity (qp) in mammalian cell bioreactor mean the amount of cells made per
unit time per volume. To increase bioreactor productivity, the value of qp need to be maximised. To
achieve a high specific productivity, a cell line with higher efficiency is needed. A well–designed
and well–developed cell line requires: 1). A strong promoter strength so that genes can express
effectively; 2) amplification of the system to give a reasonable system scale to exploit the
production potential of the cell factory.
Host cell engineering is
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How Do ROS Influence Gene Expression And Synthesis?
ROS play beneficial or harmful role based on the balance between their generation and
detoxification (Abouzari and fakheri, 2015). In plants, under optimal concentration and
physiological conditions they take part in pathogen defense, programmed cell death, senescence,
cell signaling, gene regulation and so on (Hammond–Kosack and Jones, 1996; Grant and Loake,
2000; Breusegem et al., 2001: Blokhina et al., 2003; Laloi et al., 2004; Gechev et al., 2006).
Superoxide and hydrogen peroxide in particular and ROS in general serve as intracellular signaling
molecules (Scandalios, 2005) and regulate a great deal of intracellular signaling pathways (Sauer et
al., 2001). Moreover, they are crucial secondary messengers (Saed–Moucheshi et al., 2014). ROS
influence gene expression in three ways. ... Show more content on Helpwriting.net ...
Second, they may oxidize signaling pathways directly. And third, ROS may target and modify
transcription factors where the eventual effect may bring about change in gene expression.
Furthermore, ROS activate MAPK signaling cascades which is central for mediating cellular
responses to multiple stresses (Abouzari and fakheri, 2015). They do so through Calcium ion (Ca2+)
(Price et al., 1994). Furthermore, key signaling proteins such as tyrosine phosphatase sense ROS
directly through the oxidation of conserved cysteine residues (Xiong et al., 2002). On the other
hand, ROS take part in redox cycling of cysteinyl thiols which is crucial to establish protein–protein
and protein–DNA
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Symbolism In St George And The Dragon
Known from legend, St. George is the knight who is told to have slain a dragon in Libya to save a
young woman, generally known as holding the title of princess, as expressed in Raphael's painting
St. George and the Dragon. In this oil painting, the dragon is seemingly the embodiment of evil in
the town while St. George is the knight that risks his life to slay and rid of the evil within the town
in a somewhat chivalrous manner. In St. George and the Dragon, Raphael expresses Christianity
combined with chivalry in his painting through the use of small details, symbolic representations,
contrast, human figures, and the depiction of these human figures and or characters. Raphael could
have done this due to the rise of Christianity in the Renaissance era and chivalry in art at the time.
The expression of Christianity can be represented through symbolism, color, and the details of
Raphael's painting. The dragon can be seen as symbolic of the Devil in Christianity and in turn St.
George slaying the dragon can be represented as the destruction of the Devil and all evil within that
setting. The color of the dragon is dark and is viciously drawn which contrasts with the white and
seemingly lightness of St. George's horse that brings out the good and evil within the painting. This
corresponds with Christianity as the Devil is normally depicted as dark and cruel compared to the
white that represents purity of those who are righteous. Continuing on with the darkness of the
dragon, in
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Teamwork Reflection, Questions and Answers
1– What role did you play in team meetings or discussions (online or face–to–face)? What ideas or.
work did you contribute? Consider your verbal (vocal or written tone, etc.) and nonverbal
communication (body language, facial expressions, etc).
When I have to work in a team, I try to reach success with others participants in assigned activities. I
do not take the role of leader or follower. I consider myself just another participator, but always
thinking about doing everything right and clean. I have always had in mind that teamwork are all
those actions and activities that are carried out collectively. In order for there to be an excellent
group work, I think is necessary is that the actions are developed collectively. This means that to
carry out group work, the existence of an entertainer or coordination is not necessary. The collective
performance of an action is sufficient, within the framework of mutual interaction.
I am very careful with facial expressions because I want to create a friendly and harmonious
environment around me. When I've been around other people, I've never tried to show faces
expressing inattention, anxiety, anger, mockery, and laziness. Since I want people to take my ideas
seriously, I always try to use facial expressions that show positivity, motivation, happiness, and
energy. When I participate in online teamwork, people may not see my facial expressions, but they
can perceive my desire to make things right, and the respectful attitude that I
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Why I Am Interested Of Taking The Chromatin, Epigenetics,...
"No man's knowledge can go beyond his experience", this statement by John Locke captures the
essence of why I am interested in taking the Chromatin, Epigenetics, and Gene Expression course. I
have always had a lifelong thirst for knowledge. As a child I was always asking questions about why
or how things worked. I would always tinker with things, taking them apart and reassembling them.
I questioned pretty much everything and longed to be able to do experiments and find solutions to
unanswered questions on my own. In high school, I volunteered, participated in athletics, held
leadership roles in several clubs, and also worked part–time. Despite my many extracurricular
activities, I never lost my thirst for knowledge and academic success remained my foremost goal. To
challenge myself I enrolled in the most advanced courses available and took classes offered from a
nearby community college, I graduated with both a high school diploma and an Associate's Degree.
Motivated by my life experiences, I began my collegiate career at Virginia Tech (VT) as a biological
sciences major. In short time I decided that I would pursue a dual degree, adding psychology on as
another major. It was at VT that I would get my first opportunities to further my experience
alongside my knowledge. This experience would come in the form of research. As a freshman I
worked in the laboratory of Dr. Karen Brewer. I conducted synthesis, purification and
characterization of organometallics and refined key
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Factors That Regulate Expression Of Stress Responsive...
Science I Term Paper
The research paper that this term paper is based on is Interactions Among Plant Transcription
Factors Regulating Expression of Stress–responsive Genes, Sony Malhotra and R. Sowdhamini,
National Center for Biological Sciences, June 2014, Bioinformatics and Biology Insights.
Abstract:
Plants are known to respond to abiotic stress by up or down regulating their genes. This is done by
activating transcription factors. It is known that these transcription factors, though they have DNA–
binding domains, interact amongst each other for the regulation of gene production. In order to find
out which transcription factors interact and how, the research uses genetic and molecular structure
information available in databases and computationally analyses the data. The factors that lead to the
conclusion of interaction between transcription factors includes spatial proximity and possible
interaction poses. Molecular docking is used to predict the interaction poses and DockScore is a
scoring system used to rank the interaction poses.
Introduction:
Plants are immobile and therefore need mechanisms to counteract stresses that they face from their
environment. Cold, high light, drought, salinity, abscisic acid, rehydration and combination of
stresses like cold–drought–salt stress are common abiotic stresses that plants encounter. In order to
deal with these stresses, plants either up regulate or down regulate their genes; that is, they increase
the production of
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Micro Expressions
Micro–expressions are brief, involuntary facial expressions caused by a certain emotion experienced
by the person. These expressions are shown on the face, and are universal in the sense that every
human being, no matter what origin, or where they live it will be the same as everyone else. These
expressions are also known for their difficulty in hiding them. They usually show one of the seven
basic universal emotions: Disgust, anger, fear, sadness, happiness, surprise and contempt. (John)
The study of Micro–expressions hasn't been around for very long. They were first discovered by
psychologists Haggard and Isaacs in 1966. (Humantill). In there study they stated that they
discovered these "micro–momentary" facial expressions while ... Show more content on
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By using the many ways to identify distrust and deceit, such as frowns, wrinkles, eyebrows, and
smirks, police, judges, and FBI workers can use the techniques of identifying micro–expressions to
see whether or not a criminal (or terrorist) is lying, or trying to hide something. Unless they have
had extensive training, this would be a difficult test to pass. In court, Mark Frank has been hired by
judges to help them identify the liars from the honest suspects. (ScienceDaily) When the viewer sees
a person's face, then notice the obvious things; eyes, smile, nose, and general expression with the
added micro–expression here and there. When you view a liars face, however, you see more than
just that. In some cases, you'll see a person suppressing information and trying to keep from their
secrets. This causes an unusual appearance and shows many micro–expressions from hiding the
truth of their feelings. Sometimes, a micro–expression can show that something isn't right in a
situation. For example; an interrogation. If the suspect is obviously holding back on something and
micro–expressions are written all over their face, they are hiding something or something is amiss.
This could lead to finding out that a person is being forced to hide facts. (Maureen, 2009). To train
to be able to see micro–expressions means practicing looking at people when asking questions and
having general conversation. You would have to learn how to distinguish the little flaws in a
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The Common Core Standards For Grade 6
Overview and Goals: This is one unit in a yearlong 6th grade math course. In this unit, the students
will learn about expressions and equations. Students will learn how letters stand for numbers, and be
able to read, write, and evaluate expressions in which these letters take the place of numbers. In this
unit, students will learn how to identify parts of an expression using various new terms. They will
learn to solve both one– and two–step equations. Students will be able to distinguish between
dependent and independent variables. They will be able to identify the dependent and independent
variables of equations and in turn, be able to graph them. Various activities to be completed inside
and outside of the classroom will be used to show ... Show more content on Helpwriting.net ...
Include expressions that arise from formulas used in real world problems. Perform arithmetic
operations, including those involving whole–number exponents, in the conventional order when
there are no parentheses to specify a particular order (Order of Operations).
6.EE.A.3 Apply the properties of operations to generate equivalent expressions.
6.EE.A.4 Identify when two expressions are equivalents (i.e., when the two expressions name the
same number regardless of which value is substituted into them).
Reason about and solve one–variable equations and inequalities.
6.EE.B.5 Understand an equation or inequality as a process of answering a question: which values
from a specified set, if any, make the equation or inequality true. Use substitution to determine
whether a given number in a specified set makes an equation or inequality true.
6.EE.B.6 Use variables to represent numbers and write expressions when solving a real–world or
mathematical problem; understand that a variable can represent an unknown number, or, depending
on the purpose at hand, any number in a specified set.
6.EE.B.7 Solve real world and mathematical problems by writing and solving equations of the form
x + p = q and px = q for cases in which p, q, and x are all nonnegative rational numbers.
6.EE.B.8 Write an inequality of the form x > c or x < c to represent a constraint or condition in a
real–world or mathematical problem. Recognize that inequalities of the form x > c or x > c have
infinitely
... Get more on HelpWriting.net ...

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Rna Interference Regulates Gene Expression

  • 1. Rna Interference Regulates Gene Expression Chapter 1: Introduction 1.1 RNA interference regulates gene expression in eukaryotes The flow of genetic information within a living organism was first stated by Crick as "DNA makes RNA and RNA makes protein" (Crick 1956). In response to environmental stimuli, the dynamic modulation of specific gene products (mRNAs and proteins) confers flexibility and adaptability to prokaryotes, eukaryotes, and viruses (Crick 1956). Proper gene regulation is essential for cell growth, development, proliferation, and differentiation, which also lead to the creation of distinct cell types and cell cycle stages that share the same genome but exhibit different gene expression profiles (Chen and Rajewsky 2007). The increase or decrease of a certain gene ... Show more content on Helpwriting.net ... 1998). Interestingly, the phenomenon that the introduction of double–stranded RNAs "quelled" the expression of endogenous genes contain homologous sequences had been observed and even utilized as a tool to knock down gene expression by researchers long before the underlying RNAi mechanism was identified and separated from the antisense silencing by Fire and Mello in 1998 (Fire et al. 1998). They consistently found that the introduction of double–stranded RNAs (dsRNAs) was 100 or more folds effective than the single–stranded "sense" or "antisense" RNAs (ssRNA) to silence the complement gene expression (Fire et al. 1998; Kennerdell and Carthew 1998). Moreover, the dsRNA mediated gene silencing can be transferred between adjacent cells, and even inherited through multiple rounds of cell division (Fire et al. 1998). Therefore, it is proposed that this so called "RNA interference" is an inheritable and transferrable process that involves a catalytic process, which differs from the previously known antisense silencing that ssRNAs directly bind to the complement mRNA targets to repress translation by blocking ribosome access. Subsequently, Tuschl and co–workers demonstrated that RNAi mechanism exists in mammalian cell lines for the introduction of synthetic ... Get more on HelpWriting.net ...
  • 2.
  • 3. Modulating Gene Expression with Multiple Intermediate Steps Gene expression can be modulated by multiple intermediate steps, including transcription, post– transcriptional modifications, RNA splicing, translation, and post–translational modifications; transcription being the first step and a key mechanism for regulating gene expression. Transcriptional control is mediated through promoters and regulatory elements, which are all essential for spatiotemporally correct gene expression. Genome organization has been undoubtedly linked with regulation of gene expression through global analyses of mammalian genomes. Previous hypotheses suggested that genome is arranged as independently regulated chromosomal domains flanked by boundary elements (i.e. insulators). This might be true in compact genomes of organisms such as yeasts (e.g. S. cerevisiae 12.1 Mb), where an uninterrupted genomic segment (i.e. regulatory expression unit) is formed comprising of a particular gene and its regulatory elements. Nevertheless, in more complex genomes such as those of humans (H. sapiens 3.2 Gb) and mouse (M. musculus 2.7 Gb) the situation is substantially more complex, where genes and their regulatory elements can be dispersed over many hundreds of kilobases. These observations concur with current hypotheses, where cis–regulatory elements including Locus Control Regions (LCRs), enhancers, silencers, and insulators, may be dispersed over tens to thousands of kilobases. Furthermore, cis–regulatory elements of one gene are commonly embedded within a neighbour ... Get more on HelpWriting.net ...
  • 4.
  • 5. The Discovery That Double Stranded Rna Can Efficiently... The discovery that double–stranded RNA can efficiently silence gene expression (RNA interference, RNAi) was made by Andrew Fire and Craig Mello in 1998 in the worm C. elegans (Fire et al., 1998). It has since been hailed as one of the most important innovations in modern molecular medicine and accordingly, the pair were awarded the Nobel Prize in Medicine and Physiology in 2006. This discovery opened up a whole new field of biological research which has impacted all aspects of medicine including neuroscience. The reason underlying this is that RNAi is now one of the most powerful and widely used tools to selectively inactivate gene expression. This technique has been used not only to enhance our understanding of gene function, but also as ... Show more content on Helpwriting.net ... RNAi challenges this notion by demonstrating that RNA can also disrupt this flow of genetic information and prevent protein expression. Since 1998 the exact mechanism of RNAi has been thoroughly investigated, and it has been shown that the RNAi machinery, known as RNA–induced silencing complex (RISC), is activated when two fragments of RNA combine to form double– stranded RNA (Ramachandran et al., 2013). RISC then binds to one of these RNA fragments, which acts as a template allowing RISC to search for its complementary sequence on the target mRNA. As such, this fragment is known as the guide or 'antisense' strand (Wang et al., 2011). When RISC detects its matching sequence, the target mRNA is cleaved by certain nucleases or degraded by the cellular machinery, which effectively prevents translation of the transcript and silences expression of the protein (Wang et al., 2011). As described, the initial step in this process relies on the formation of an RNA duplex, which can occur in two pathways. Firstly, dsRNA can form in an endogenous manner due to the presence of non–coding regulatory RNA called micro (mi)RNA. miRNAs were discovered in the early 2000s as a result of Fire and Mello's work, and they function as important post–transcriptional ... Get more on HelpWriting.net ...
  • 6.
  • 7. Expression Of The Long Non Coding Rna Expression of the long non–coding RNA Sox2ot during postnatal developmental of the rat brain Introduction Long non–coding RNAs (lncRNAs) make up a large portion of cellular transcripts in the mammalian transcriptome (Clark and Blackshaw 2014) . In all human transcripts, at least 10,000 non–coding RNAs are thought to be greater than 200 base pairs (bps) in length, with little to no coding capacity, and are therefore classed as lncRNAs (Zhu et al. 2013; Clark and Blackshaw 2014). In some cases, transcripts can reach up to 9kb but, on average, are around 500–1000 bases long (Chakraborty et al. 2014). For an RNA to be classed as long non–coding RNA, open reading frames (ORFs) must be no longer than 100 amino acids, although some studies have ... Show more content on Helpwriting.net ... This tissue specificity has been attributed to the presence of transposable elements at transcription start sites (Fatica and Bozzoni 2014). Origins of lncRNA LncRNAs can arise from several different processes; for example, it is possible for local tandem repeat sequences and retro–transposition of non–coding RNA to create lncRNAs (Lee 2012; Clark and Blackshaw 2014). Disruption of coding proteins gene frames can also result in lncRNAs, such as Lnx3 from the Xist gene (Zhu et al. 2013). The formation of new lncRNAs can also arise from the decay of protein coding genes, duplication of other lncRNAs or de novo evolution from previous noncoding sequences, the last of which is the most common (Kapusta and Feschotte 2014). A large proportion of lncRNAs, around 60% in human and murine ES cells, are synthesised from bidirectional transcription at protein coding promoter sites (Kapusta and Feschotte 2014). Other factors that result in the synthesis of lncRNA include transposable elements (TE); in fact, 2 out of 3 lncRNAs transcripts in humans and mice contain at least one TE sequence, which can be found in 20–40% of all lncRNA exonic nucleotides (Kapusta and Feschotte 2014). General functions and conservation of lncRNA The functions of lncRNA have not been widely ... Get more on HelpWriting.net ...
  • 8.
  • 9. The Facial Expression Of Saint Paul The Hermit And Saint... Whether Mona Lisa is smiling or not has become one of the most interesting debates in the world. Some artists think the facial expression of Mona Lisa is smiling, the others, nevertheless, believe it is only an expressionless face with a hollow stare. Why this happened is not a weird phenomenon. One often judges a thing with her/his personal experiences, and distinct experiences make different individuals generate diverse ideas, just like Shakespeare's words, "there are a thousand Hamlets in a thousand people's eyes". Furthermore, art is the product of people's thoughts in different periods, and painting is one manifestation of art because every product reflects the contemporary religious thoughts and historical activities. Someone who appreciates a painting would not only relate to historical period but also combine the modern ideas. Thus, when people enjoy a painting, they always have different opinions with others because everyone sees a different world. To analyze a painting needs to focus on many factors, like color differences, expression of facial emotions, and pose overlooking. Therefore, two paintings which are Saint Paul the Hermit and Saint Jerome can be distinguished in terms of three aspects, different color of paintings, unlike facial expressions, and same living environment in the painting. First of all, the colors used in the paintings, Saint Paul the Hermit and Saint Jerome, are quite different. The dominant hue of the first one is dark, and another is ... Get more on HelpWriting.net ...
  • 10.
  • 11. Facial Expressions A History on Universal Facial Expressions: The Works of Lamarck, Izard and Russell Kathleen Coyne–Boyles From the time of the ancient Greeks through to the modern age, understanding and interpreting man's emotions and body language have been a source of both fasicnation and a point of intellectual debate. The ancient philosophers, such as Aristotle, proposed the idea that the face takes on varying appearances which are characteristic of each of the passions (or emotions) of humankind. The famous Greek masks of the theatre embody exaggerated facial expressions in order to dramatize the great joys and tragedies of human existence. Artists throughout history have worked to capture facial expression while philosophers have debated about ... Show more content on Helpwriting.net ... In this way, the son inherits this soft characteristic and the facial expression becomes a feature of soft inheritance. In Use and Disuse Theory, adaptation in a species occurs because complex force drives organisms further up a ladder of increasing complexity. Then, environmental force adapts organisms to their local environment. Adaptation evolves by using some characteristics more than others based upon differing environments. Those characteristics not used or needed as much drop off and those needed to suit a particular environment are passed on. In some ways, the so–called Ghost of Lamarck left its impressions upon Darwin and sparked a debate among evolutionary theorists as to whether characteristics like facial expressions are socially learned skills which can be inherited by the next generation or if they are universal and slowly evolving, purely biologically programmed responses to basic human survival. Universality of Facial Expressions Darwinian thought holds that facial expressions are universal in nature and evolved in man alongside his basic struggle for survival. These facial expressions developed in order to protect and keep the species alive. One example would be that a tribe watches a woman take a bite out of a poisonous plant and observes her face as she shows disgust or pain. Watching this response, the tribe knows not to taste this plant because this facial expression has long been biologically ingrained ... Get more on HelpWriting.net ...
  • 12.
  • 13. Paul Ekman and His Study on Facial Expressions Paul Ekman was born in 1934 and at age 14 his mother committed suicide after suffering from severe bi–polar disorder. At that point, he decided he wanted to study facial expressions of emotion in order to assist other people before such tragic outcomes occurred. By the time he was 15, he had enrolled in University of Chicago and became interested in group therapy. He earned his Bachelor's degree in 1954 and in 1958 he had earned his Ph.D. in clinical psychology at Adelphi University. His Master's thesis was about the study of facial expressions and body movement. From 1960 to 2004 he worked at the University of California and starting in 1963 he received continual research grants from the National Institute of Mental Health for 40 years to study nonverbal behavior. Paul Ekman was influenced by Charles Darwin's book titled, The Expression of Emotions in Man and Animals, originally published in 1872. Charles Darwin used photos, drawings and body postures from animals and humans and compared them with facial expressions and emotions. For instance, a growling dog has many facial features similar to an angry human. "Darwin argued that the existence of these similarities demonstrates that emotional expression must have evolved through natural selection in the same way that other characteristics evolved. He further contended that the expressions must serve a function; they enhance survival of the organism". (Reevy, G. 2010 Encyclopedia of Emotion (Vol. 2, pp. 410–411). I believe ... Get more on HelpWriting.net ...
  • 14.
  • 15. An Organism 's Capacity Regulate Gene Expression First, you will summarize the relevant background that leads up to the hypothesis to be tested in this paper. An organism 's capacity to regulate gene expression in the response to ecological elements, for instance, nourishments levels and oxygen accessibility is basic for survival. Taking to account that sirtuin genes act to regulate protein expression by two distinct mechanisms: deacetylation of histones proteins, leading to tighter chromatin packaging and therefore decreased transcription; or deacetylation of various other proteins, leading to inactivation. The first experiment implicating sirtuin genes in aging was done in yeast cells. This experiment showed, overexpression of sir2 protein in yeast led to an increase in lifespan. From ... Show more content on Helpwriting.net ... Later, researchers integrated geEx1 (geIn1, geIn2) and geEx2 (geIn3), which had an increase in sir– 2.1 compared to N2. These integrated lines showed the same lifespan as extrachromosomal arrays. Authors then conclude, as in yeast, expanding the dose of a SIR2 gene augments the lifespan of C. elegans. Research further knocked down daf 16 to examine if sir2.1 augments the lifespan by causing mutations in the insulin–like signalling pathway, which is suppressed by daf 16. The findings showed, animals, which did not have daf 16, lived shorter. Researchers then conclude, sir–2.1, requires DAF–16 for lifespan extension. Also, it appears to function in the insulin signaling pathway shown to regulate aging and dauer formation in C. elegans. . ● Identify and discuss the underlying assumptions that must be true in order for either the conclusion and/or experimental evidence to be sound and valid. One of the underlying assumptions is, aging is regulated by genes, and overexpression of sir2 in yeast leads to an increase in lifespan. Another assumption is, aging is a universal and genuine process and its mechanisms are conserved in all organisms. Consequently, researchers specifically examined the dosage of sir2 proteins in C.elegans. Moreover, it is also assumed that all the animals tested, are under ... Get more on HelpWriting.net ...
  • 16.
  • 17. Facial Expressions, Personal Appearance, Detecting Deception If I had to pick three lessons that impacted me the most this semester I'd have to choose: Facial Expressions, Personal Appearance and Detecting Deception. I always thought I was good at reading people but I soon realized that I, just like most people in society today, jump to conclusions that can cause a lot of confusion. I have never been able to keep control of my facial expressions. I roll my eyes constantly and wear my feelings on my face, as some people have told me. I never thought it was that much of an issue until taking this class. I realized that I could be coming across as a completely different person and be judged based on that assumption by someone. "In a real sense, our quest for meaning in this world begins and ends with facial expression" (Eaves and Leathers 25). This line stuck out to me more than anything else in this chapter, making me realize how much I need to work on making sure I come across the way I am wanting to. I also have been working on "reading" further into people's facial expressions, to see if it could help me in understanding the real reason for their attitudes. Since I plan on being a counselor in the future I feel that really being able to read someone will help me be able to dig deeper into some of their issues. I have always tried my hardest to not judge someone by their outward appearance. When I do catch myself though, it can usually be read on my face. Reading the chapter on personal appearance showed me that although we as a ... Get more on HelpWriting.net ...
  • 18.
  • 19. The Effect Of Cd44 Expression On Drug Resistance And Cell... Ijeoma Unachukwu PI: Dr. Kyle Murphy Fall 2014 The Effect of CD44 Expression on Drug–Resistance and Cell Migration in the Zebra Fish Xenotransplant Model Abstract Introduction Xenotransplanting is an effective tool to look at the profileration and metastisi of cancer cells. Traditionally, xenotransplant experiments have been done in mice, but for this experient we used zebra fish. Xenotransplantation in mice can be timlely and costly and often times inefficient. Zebrafish on the other hand have can reproduce quicly and have similar systems to that of humans. One of the main benefits of using zebrafish a cancer xenotransplant model is that they do not develop an adaptive immune system until 14 days after post fertilization. This makes it possible for human cancer cells to survive when they are injected into the zebrafish embryos. (Evaluating human cancer cell metastasis in zebrafish Yong Teng, Xiayang Xie, Steven Walker, David T White, Jeff S Mumm and John K Cowell).Recent papers have already proven the similarities between human and zebrafish liver tumors at a molecular level. Also, studies have created carcinogen induced neoplasms that resemble human timors in zebra fish and they have metastasized. In every situation, human cancer cells and tissue have survived and proliferated in zebra fish provinf that it is a comparative tumor model. Not only can xenotransplanted zebrafish can support the normal development of the host and proliferation of transplanted human melanoma ... Get more on HelpWriting.net ...
  • 20.
  • 21. The Expressions Of Identity Expressions of Identity It is worth noting how individuals express themselves differently in various settings, the binary between public and private provides people with different ways of behaving. "Given public behaviour is regulated by contemporary equity laws, individuals may feel obliged to curb the public expression of their personal prejudices, only articulating them in 'privatised' spaces (such as home) where they know their opinions will be shared and that even if challenged, will have no wider consequences for the individual." (Valentine 2013: 6) Without a doubt people have to limit their behaviour in public as a result of methods of control such as CCTV and police presence, thus the home becomes a space where individuals can truly express themselves. However, the home consequently becomes a setting in which other behaviours take place that would not be deemed acceptable if performed in the public gaze. ... Show more content on Helpwriting.net ... Tolman and Raphael (2000) emphasise that domestic violence is extremely highly documented among poorer women, although it is an issue that can affect anyone, low– earning women particularly in the global south face these problems. Again, linking back to the binary opposition of Public and Private, Smith (1989) argues that it is the very fact that it is concealed from the public eye and often unknown to people outside of immediate family that makes the issue difficult to deal with. There is no surveillance and therefore this issue becomes difficult to deal with compared to if it was taking place in public ... Get more on HelpWriting.net ...
  • 22.
  • 23. Flipping The Switch : How Cells Use Rna Regulate Genes... Dr. Tina Henkin's seminar "Flipping the switch: How cells use RNA to regulate genes expression", was outlined by four general questions. The first question addressed in the seminar was "Why study Microbes?". The next, "Why study bacterial gene regulation?". The third question, "What are the basics of gene expression?". Finally, "What's special about riboswitches?". Dr. Henkin addressed these questions throughout her seminar, which eventually led into to more specific questions of gene expression and predicted hypotheses of her model. However, to understand these more specific questions and predictions it is crucial to understand the first four questions outlined in the beginning of the seminar. The question "Why study Microbes?", is an ... Show more content on Helpwriting.net ... In addition, many of the drugs available to treat infectious disease actually originate from bacteria and fungi. In Biology, constant inquiry of the mechanisms of life lead to new discoveries every day. Clearly, microbes are very important for studying and understanding our world. Dr. Henkin stressed their importance in the seminar, specifically the study of bacteria and bacteria's manipulation of gene expression. The next two questions, "Why study bacterial gene regulation?" and "What are the basics of gene expression?" were addressed next in the seminar. Fascinatingly, a bacterial cell knows how to respond based on their environment. For example, they recognize and respond differently when in water than in a human. The average bacterial cell has close to 1000 genes, this is significantly more genetic information that they can use at any given time. These genes are stored in the DNA and each individual gene provides the information to make an individual product. So, how is a gene expressed? The first step in this process is called transcription. During transcription, the information encoded in the DNA is copied by RNA Polymerase to make mRNA. The next step is referred to as translation. During translation, the information in the mRNA is "translated" to make a protein using the ribosome. These steps basically turn genes "on and off" in a bacterial cell in response to a change in their environment. How does this happen? According to Dr. Henkin in her 2008 ... Get more on HelpWriting.net ...
  • 24.
  • 25. Free Speech : Limiting The Speech And Expression For Students Limiting the speech and expression on campus for students, speakers, and anyone else related to a campus and its activities ultimately impairs their voice and takes away some of the power they are constitutionally guaranteed. In fact, 54% of students have stopped themselves from sharing an idea or opinion in class and 29% have stopped themselves from sharing on campus outside of class because they are scared that their ideas are incorrect or offensive ("Student Attitudes Free Speech Survey"). At public colleges, all students are supposed to be protected by the First Amendment, yet students still feel uncomfortable expressing their opinion should it go against the majority. Instead of exercising their human right, they submit to the actions which have implied that the silencing of some is ok. The sad fact is that students and speakers still don't feel safe having their own opinions at their own school, making them submissive which can likely carry on throughout their life. One example of the restriction of student's speech was when a student group at Arkansas Tech decided to roll a ball around campus telling people to write whatever they wanted on the "free speech ball." Even as a public university, security forced them to keep the event within a free speech zone, restricting the speech and expression of everyone involved ("Arkansas Tech University: Student"). Restriction of speech occurred again when New Mexico State University charged a student group a $300 security ... Get more on HelpWriting.net ...
  • 26.
  • 27. Expressed Sequence Tags (ESTs) versus Serial Analysis of... Expressed Sequence Tags (ESTs) versus Serial Analysis of Gene Expression (SAGE) INTRODUCTION Expressed sequence tag or also known as EST are 200 to 800 unedited nucleotide bases in length, and randomly selected single pass sequence reads which are derived from the cDNA libraries while serial analysis of gene expression or SAGE have more shorter sequence tags with only 10 to 20 base pairs. But even it is short it still have enough information to uniquely identify a transcript, especially if it is obtained from a unique position in each of the transcripts. Serial analysis of gene expression is a method or technique designed to gain a direct and quantitative measure of overall gene expression pattern. It is basically a sequence based ... Show more content on Helpwriting.net ... ETS also can determine definitively the number of copies of each transcript per cell and highlight any differential gene expression. EST includes an inefficient sequencing step, in which one sequencing process yields only one cDNA sequence. Although the more recent methods of hybridization based analyses (DNA microarray) using immobilized cDNAs (Schena et al., 1995) or oligonucleotides (Lockhart et al., 1996) can potentially examine the expression patterns of a relatively large number of genes, the method can only examine expressed sequences that have already been identified. In contrast, the SAGE method allows for a quantitative and simultaneous analysis of a large number of transcripts in any particular cells or tissues, without prior knowledge of the genes (Velculescu et al., 1995). METHODOLOGY The SAGE method is based on the isolation of unique sequence tags from individual mRNAs and concatenation of tags serially into long DNA molecules for lump sum sequencing. It can be applied to the studies exploring virtually any kinds of biological phenomena in which the changes in cellular transcription are responsible. SAGE is based mainly on three principles, firstly, a short sequence tags, 10 to 15 base pairs contains sufficient information to uniquely identify a transcript provided that the tag is obtained from a unique position within each transcript to allow the efficient sequencing analysis. Secondly ... Get more on HelpWriting.net ...
  • 28.
  • 29. Gene Expression And Bacterial Transformation Essay Introduction: This unit had two labs that developed on the same basic idea: gene expression in bacteria. Gene expression is a highly regulated process in which cells either allow or prevent a certain trait to be shown in the next generation of offspring. One major proponent looked at in the first lab was the DNA plasmid. A DNA plasmid is a short, circular sequence of DNA nucleotides that are common in bacteria, but are rarely found in larger organisms. The plasmids are useful in that they introduce new genetic instructions into bacteria cells. In the case of this lab, the new genetic instruction was that of the Green Fluorescent Protein, better known as GFP. This protein was monitored throughout the experiments as the gene that was expressed or prevented. Along with GFP, these plasmids would often pass along a selection gene like beta–lactamase that would allow for the gene to be expressed in specific environments. One example of such an environment is an ampicillin–rich environment. Day one's lab focused on bacterial transformation. This process is the way in which new DNA is introduced into a bacteria cell. In this process, the bacterial cells need to be made permeable through treatments by way of heat or by mixing with different salts. Once the bacteria cells are made permeable, the plasmid can introduce the genetic instructions used for GFP in the cells. Those that are made permeable have a much higher tendency to express the protein. The discussion ... Get more on HelpWriting.net ...
  • 30.
  • 31. Regular Expression Of A Web App Regular Expression To FSM– Web App 3.1 Algorithm 3.1.1 Regular Expression Parsing I built my own parser which will suit the recursive nature of my regular expression to Finite State Machine Algorithm. To parse the regular expression, first, the expression is converted from infix to prefix form. To convert from prefix to infix form, the string is read from the back and on meeting an operator, it is pushed to an operator stack if top of operator stack has lower precedence than the read operator else pop it to append to front of output string. If an operand is met, simply append it to beginning of the output string. After converting the expression to prefix, second step is to construct expression tree where each inner node including root node has operator as its value and the leaf nodes are operands. The entire infix string is read from the end. If the character is an operand it is pushed to the operand stack else if an operator is read, operands are popped from the operand stack and assigned as left and right child of node with having the operator as the node value and pushed again into the stack. Since the backward construction algorithm is recursive in nature, such a syntax tree makes it more suitable for the algorithm where expression will be taken as input. 3.1.2 Regular Expression To FSM– Backward Construction After converting input expression to prefix and constructing expression tree, next steps is to implement the Backward Construction algorithm for ... Get more on HelpWriting.net ...
  • 32.
  • 33. Genetic Expression In Gene Expression In gene expression DNA, the blueprint of life is transcribed into RNA, a nucleic acid that acts as a messenger carrying instructions that control the synthesis of proteins. Gene expression is vital to determining cell functions and exactly how much protein should be produced by the cell. The process in which the end proteins are modified can also be manipulated by researchers. The types of cells which are typically handled in laboratories include prokaryotes. Escherichia coli is a bacteria found in the human digestive system, preventing other pathogens from residing. Certain E. coli strains can be pathogenic and can lead to food poisoning, urinary tract infections, pneumonia, and gastrointestinal infections. Ampicillin is an antibiotic ... Show more content on Helpwriting.net ... During this study, plasmids with ampicillin resistance (pAMP) known as pUC18, were manipulated due to their stability in extreme environments. The pUC18 plasmid pAMP gene codes for the production of beta–lactamase, an enzyme utilized in the breakdown of ampicillin. Once E. coli obtains this gene, it is able to survive in an environment that is ampicillin–rich. Lux plasmids were the second type used to provide bioluminescence in the cultures of E. coli grown. The lux plasmid contains genetic material which codes for luciferase, an enzyme which catalyzes bioluminescence, a light–emitting reaction. This is considered the marker where transformation efficiency can be analyzed through the light emissions. Several techniques were implemented in this study to improve E. coli bacterias competency, the ability for a cell to uptake genetic material. These procedures were necessary considering the bacteria does not allow for transformation so efficiently in natural circumstances. Since it lacks the ability to do so, the uptake of material would be limited despite the preventative measures taken. To neutralize the negatively charged DNA in E. coli, the use of CaCl2 (sodium chloride), a positively charged solution, dissociates the calcium from chloride, which enters the cells and alters the charge. This process is known as electroporation. This causes the bacteria cells to swell and the calcium molecules help adjust the cell membrane to become ... Get more on HelpWriting.net ...
  • 34.
  • 35. Facial Expression : An Import Source Of Information Ranma Budlong Paper I: Facial Expression, 1: The face is an import source of information when trying to decide on the attitude or mood of a person. Eye contact is very important. Whether or not the person has eye contact or not is a factor. If someone breaks eye contact they may be embarrassed or trying to decide on what to say. A major amount of information is received by the two parties exchanging eye contact. Eye contact indicates if a person wants to communicate or not. If someone looks as you approach, it is a safe bet they do not want to communicate. If a person looks in your eyes, then they wish to communicate. The eyes are the "mirror of the sole". The eyes can be either hard and staring or soft and affectionate. Then there are ... Show more content on Helpwriting.net ... How a person stands, the position of the arms and legs needs to be considered. The stiffer a stance and crossed arms could be extreme anger. However the person could be just cold and trying to stay warm. Chattering teeth would be a good way as well as temperature to determine the case. The eyes not making contact at first do not mean as much. They can changed when the person notices another entering the room. I should point out that the ears are important as well. When very angry peoples ears often turn red. To get a proper "reading" a person needs to look at the entire body. Are their arms at their sides, on their sides or crossed? Taken with the face and eye contact it tells the story. II: I am going to use my deceased wife as my life experience. She was always very easy to read whether happy, sad, angry, and very angry and it is time to leave the room and house as quickly as possible. I remember the day we meet in 1997. A mutual friend though we would make a good couple and we meet in a neutral place. She was standing by the table and looked into my eyes when I saw her. She had soft interested eyes, a slight smile on her face and she was standing tall but not stiff. She looked at me in the eyes at once. She hid her feelings better than me. My heart was thumping in my chest but I exchanged eye contact with her. My mouth started a bit open almost in shock to warm up very quickly. My eyes were glowing with affection. During our first controlled ... Get more on HelpWriting.net ...
  • 36.
  • 37. The Human Expression And Micro Expressions Photographers Know the Details Most photographers are more than capable of taking a technically great image. However, teaming up with a headshot photographer to help with your personal branding is one of the best investments you can make. We sweat the details: The human expression and micro–expressions Body language and positioning Finding your best angles Making sure your clothing, hair and makeup work seamlessly together It's All About Experience Check any prior portrait experiences you've had at the door. Our session will be collaborative, immersive and interactive. You'll even walk away with a few techniques to look your best in any photo going forward. Head over to Your Session to learn about looks, coaching, ... Show more content on Helpwriting.net ... Exceptions can be made, but note that the exceptions generally deal with earrings (diamond studs or less). Our aim is to get a clean, timeless look with a great expression. Makeup: Begin with a clean palette – cleanse, exfoliate and moisturize your face on the day of our shoot. Please don't overdo your foundation. Avoid using anything that has SPF protection in it as it'll make you look washed out under flash photography due to reflected light. Your basic daily use of mascara (as long as it's not underneath your eyes), blush and shadow should be fine (nothing wild), and stay away from smoky eyes. Make sure anything that goes on your lips isn't shiny and reflective – remember, the focus is on your eyes, not your lips that have gone nuclear! Hair – Women: Please make sure your hair is ready in the way that you would normally like to present yourself and, if you would like, bring any of your products with you that you may need during the shoot, including hair ties since there is a chance you will have a ponytail at some point. We won't change things up much since hair is a personal preference thing, but it never hurts to be a little prepared. Hair – Men: There isn't much to go over on this one. All of the points outlined above apply here, although for those that often bounce between facial hair and clean cut, you might want to have your razor handy for a switch mid–shoot. Headshots for Businesses Company 'About Us' pages are among the most visited on the Internet. Your
  • 38. ... Get more on HelpWriting.net ...
  • 39.
  • 40. The Expression Of Phenylthiocarbamide The expression of phenylthiocarbamide is very questionable concept given such a diverse and vast population of people living on earth with only a 0.1 of difference genetic. Phenylthiocarbamide is white fine powder that when ingest an individual can taste bitterness or nothing. In the mouth, there is gene called TAS2R that encodes for bitter taste receptor. The experiment will test the expression of TAS2R gene using phenylthiocarbamide or PTC on a selected population of Florida International University students for the recognition of bitterness or absent. Twenty–four undergraduate students of Florida International University will be participating in the experiment where height, age, sex, and ethnicity is negligible. In concept of evolution, ... Get more on HelpWriting.net ...
  • 41.
  • 42. Freedom of Expression That there are rights to which people are entitled by virtue of their humanity is not a novel idea. The statement in italic above surely has been presented throughout history as an archetype of this concept, specifically noting freedom of expression as a right to which all hold possession. The assertion of this right is well represented in the Unites States Bill of Rights. Within that document the First Amendment specifically restricts governmental powers prohibiting any such law or act from abbreviating our freedom of speech . This keystone to the American Democratic System spawns dialogue and discourse which forms policy, law, procedure, and so on. I truly believe that the aforementioned claim is accurate; everyone has the right to ... Show more content on Helpwriting.net ... There is a growing population of parents and educators that suggest game companies shouldn't be allowed to create violent games or to include sexual content . If we do allow our concept of agency to include companies or organizations then can we allow a restriction on the creativity of game makers? If everyone, including game makers, has the right to express themselves then it would seem that censorship, beyond the parental rating systems, would violate that right. However, consider special interest groups and large corporations that provide campaign funding to particular candidates in governmental elections. In 2010, the US Supreme Court ruled that the government "could not ban political spending by corporations in candidate elections ." This means that some of the most powerful organizations on the planet can exercise their freedom for expression by providing unlimited funding to support candidates that further their business's agenda. For all intents and purposes, those who accept conditional special interest funding possess the capacity to campaign with greater intensity, allowing them exposure other candidates fail to get. These candidates run the risk of being indebted to the 20% of the population that control 90% of the financial wealth in the US . It would seem that these corporations, while granted freedom of expression, hold great influence over candidates in US elections. This means that the 80% of the population, which hold 10% of the US financial ... Get more on HelpWriting.net ...
  • 43.
  • 44. Functions Of The Mechanism Of Gene Expression Researchers daily utilize the knowledge of the mechanism of gene expression, allowing them to operate in different areas. An example is the imposition of certain conditions to micro–organisms, which are capable of producing drugs or induce cells to function properly, which is of great importance in medicine. Great emphasis is placed on control systems based on proteins but recently research started to also focus on the use of systems based on RNA, which is equally as polypeptides involved in the regulation of processes such as transcription, mRNA degradation and translation. Ribonucleic acid can regulate gene expression by the presence of the particles in the chain, where the individual parts are complementary to each other and can form hydrogen bonds therebetween to form a secondary structures. TRANSCRIPTION transcriptionis the first stage of gene expression. Its mechanism is based on rewriting the genetic information contained in the nucleotide sequence of the DNA strand to the RNA. The process can be divided into the initiation, elongation and termination. In a first step, an RNA polymerase binds to the denatured template locally at the site promoter. Then, in elongation step, it adds more ribonucleotides, complementay to the DNA strand, to the nascent mRNA in the 5 '→ 3 '. The process terminates at terminacyjnym, which mostly is characterized by regions complementary to each other, resulting in the formation of secondary structure in a transcript hairpin [5]. In ... Get more on HelpWriting.net ...
  • 45.
  • 46. Importance Of Subjective Modality 1. What is the problem? The main problem of the topic is that subjective modality can be expressed not only through commonly known and most frequently used modals and auxiliaries such as modal verbs, but through other means, such as adjectives, nouns, adverbs etc. According to Solganik, subjective modality is present in all levels of language. In the lexicology, it's a variety of evaluative means; in morphology – modal linking words, particles, pronouns, etc. Even in semantics of case, modality occurs. The most important role that modality plays is in syntax. Not only does subjective modality contributes to semantics, but also to the functioning of syntactical units and speech production. 2. A broad study of the question. Modality is a linguistic manifold phenomenon. It is a broad expression of the speaker's opinions toward the situation or event, it expresses the relations between the utterance and reality. Semantics of subjective modality does not only include intellectual ability and ability to reason, but it also includes different types of emotional reaction. There are several classifications of modality where subjective mood occurs: deontic and epistemic. Epistemic modality. The word "epistemic" came from Greek, meaning `knowledge'. According to Palmer (2001), speakers use epistemic modality in order to express their judgments about the facts, they use it in when they utter or write their attitude. Epistemic modality concerns what is necessary or possible based on ... Get more on HelpWriting.net ...
  • 47.
  • 48. Fresh Expressions [1] As you may know, the Port Philip West Presbytery to which we belong is doing Regenerating the Church Strategy as its main agenda. To do this task, Fresh Expressions, a new form of church, was selected as its main paradigm and strategy. Before coming to this parish, I didn't know much about Fresh Expressions. In the meanwhile, I have learnt about it through attending Mission Shaped Ministry course once a month and reading related materials personally. In addition, I started semi–structured interview project to know our members' ideas of this issue, and figure out what to start and where to begin within our context. Through these interviews, I found that most participants don't know much about the concept of Fresh Expressions like me. Since ... Show more content on Helpwriting.net ... For a long time the church has been the centre for worshiping and praying to God; we couldn't imagine Christianity without the church building in our community. [3] However, postmodernism has changed the situation dramatically. Postmodernism has massively influenced most fields of human activities including art, literature, anthropology, politics, economics, philosophy, religion, film, architecture, and so on. It's not easy to define postmodernism in a word as there are various factions of postmodern thought depending on different areas. But these theories share the view that there are limits to human knowledge, so there is no absolute truth. They argue that there is only relative, subjective value according to differences in perception and consideration. Thus, contemporary people try to reinterpret what we have believed with different perspectives and approaches, focusing on imagination rather than on rationality. Influenced by this postmodern relativism and secularism, many people become sceptical to absolute truth revealed in the Bible and are leaving the church very quickly especially in western ... Get more on HelpWriting.net ...
  • 49.
  • 50. Comparing Differential Gene Expression Of The European... YOUR NAME: Ruan Rupasinha NAME OF GROUP MEMBERS: Ruan Rupasinha, Danny Hoskins, James McCusker, Oliver Tancred, Josh Davis, Joe Howes, Giselle Edge TITLE OF RESEARCH PROJECT PROPOSAL: Comparing differential gene expression of the European honey bee Apis mellifera and the Asian honey bee Apis Cerana when infected with Varroa destructor SCIENTIFIC ABSTRACT: The European honey bee Apis mellifera is in serious decline as colonies worldwide are wiped out by the Varroa mite, Varroa destructor. Even though many colonies die out once infected there is significant variation observed in the time that it takes, leading to the assumption that some colonies may be resistant to the mite. In this proposed experiment genes responsible for resistance would be identified in the Asian honey bee and would then be used to identify similar genes in the European honey bee. Hives infested with the Varroa mite would be tested to ascertain the levels of up– regulation and down–regulation of the target genes. The hypothesis is that various genes will be up and down–regulated in both species, not necessarily the same ones. RT–PCR would be used to identify the alleles responsible for immunity in both species. Once resistant strains of Apis Mellifera have been identified they would be tested for resistance via exposure to the Varroa mite. The discovery of resistant strains of Apis Mellifera would allow for selective breeding to be carried out to increase the species numbers, which is why this ... Get more on HelpWriting.net ...
  • 51.
  • 52. What Are The Basics Of Gene Expression? The major research questions addressed in the presentation consisted of: why to study microbes? , What are the basics of gene expression? , What's special about riboswitches? The major hypotheses that were explored during the presentation were "S box" represses genes involved in the synthesis of methionine and SAM in response to the high SAM concentration; and the low SAM results in the readthrough of the termination site. Also "How can gene expression be regulated" and under what conditions/processes the bacterial cells could use to detect environmental signals, specifically Dr. Henkin talks about some of the predictions of the model, which another hypothesis is "If we reduce SAM concentrations in the cell would we see increased gene expression"? Also would the increase in expression be from the effects on translation? Dr. Henkin used a variety of the methods to study the topic including a power point presentation in which she organized the information she was going to talk about in front of the class. The specific method used in the presentation was the S box riboswitch structural model, and the different types of S box riboswitches. (SAM). She started the presentation talking about how bacterial cells have more genetic information than they use at any given time, and explained the basics of gene expression. Dr. Henkin explained the many important steps that the expression undergoes. Starting with step 1, transcription occurs which is the expression of a gene requiring the ... Get more on HelpWriting.net ...
  • 53.
  • 54. Conflict In Graphic Novel Persepolis Satrapi's graphic novel, Persepolis, depicts the coming of age story of Marjane and her experiences before, during, and after the Iranian war. In the course of Marjane's experiences, she frequently encounters conflict and the hardships that ensue when growing up. Nevertheless, these hardships are major factors that shape Marjane as a character and establish the context of the novel. Satrapi uses the graphic novel conventions and literary devices to convey conflicts of Marjane that are within herself, with man (in the form of her teachers), and with society. Firstly, pages 70–71 demonstrate Marjane's inner conflict with her emotions, beliefs, and mind after the loss of her uncle. In order to convey the grief, Marjane feels, Satrapi draws a ... Show more content on Helpwriting.net ... The women's branch notice Marjane and chastise her for wearing inappropriate clothing. Through this scene, it reveals the difference of Marjane's opinions against the government's and the society. In the first panel, the dealers' speech bubbles don't have fully closed boundaries. This indicates that words aren't said at normal output and they are whispering. Since they are whispering, it signifies that buying tapes need to be kept confidential. Furthermore, in the second to the third panel, both Marjane and the dealer have serious expressions; panels' backgrounds are black; and both characters turn their heads too quickly observe their surroundings. These actions suggest the requirement for caution and secrecy, which indicate that severe punishment occurs to those they catch buying and dealing tapes. Although Satrapi expresses the dangers of these actions, Marjane takes the risk to buy tapes and oppose the law. This proves her strong opposition to the government's laws and beliefs. Satrapi also illustrates the women's branch as tall, wearing all black, and having angry expressions, which express dominance and power over Marjane. Marjane's mouth is also shaped like squiggles, which express her worry and fear of the women's branch. By Illustrating the women's branch as someone dominant and fearful, signifies how hateful these women are and ... Get more on HelpWriting.net ...
  • 55.
  • 56. Do Facial Expressions And Body Expression Research question: Do facial expression and body posture determine whether or not students find another student approachable? Hypothesis: Students who exhibit positive nonverbal behaviours such as a content and/or smiling facial expression and an open, straight posture will attract more social interactions and people will be more likely to sit near them than students who have a serious and/or solemn expression and a closed, slouched posture. 2. Two references in APA format Blairy, S., Herrera, P., & Hess, U. (1999). Mimicry and the judgement of emotional facial expressions. Journal of Nonverbal Behaviour, 23(1), 5–41. doi:10.1023/A:1021370825283 Lamer, S.A., Reeves, S.L., & Weisbuch, M. (2015). The nonverbal environment of self–esteem: Interactive effects of facial– expression and eye–gaze on perceivers' self–evaluations. Journal of Experimental Social Psychology, 56, 130–138. doi:10.1016/j.jesp.2014.09.010 3. Method: Content facial expression: Any expression that is natural, with no indication of discomfort and/or unpleasantness, and in which the person's features (e.g. eyebrows, eyes, lips, nose) are relaxed. In other words, a content facial expression is one that is neutral. Smiling: Any facial expression that exhibits amusement and pleasantness, with lifted cheeks, and the corners of one's mouth lifted upwards (with or without teeth showing). Open posture: One in which the limbs extend away from the torso. In other words, I will be interpreting an exposed torso ... Get more on HelpWriting.net ...
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  • 58. Expressions of Nonverble Communication + What you do speaks so loud that I cannot hear what you say. Ralph Waldo Emerson Before Email and Facebook, Tweets and Instagram, Charles Darwin set out to prove that human expressions were much like those of an animal. The furrowing of brow, baring of teeth and flaring of nostrils are actions that are displayed in both humans and animals alike. Picture a hungry wolf defending its cubs. The head is lowered, the eyes are narrowed and the teeth are bared. Now think of actor in a play or movie or on television portraying a violent man demanding acquiescence of a victim during a crime. His postures, the eyes, the nostrils, the teeth, are much the same as an animal. Darwin had the strong inclination that emotions are tied to physical ... Show more content on Helpwriting.net ... Their method of study was called context analysis. These three men watched films in slow motion and noted facial expressions, hand gestures, and posture to see the correlation between these actions. They were experts on understanding how people react without having to hear a thing. Birdwhistell later coined the term kinesics or nonverbal communication. During his study, he determined that human can recognize over 250,000 facial expressions. This is an astonishing fact that many neglect in the fast paced world we now live in. 1960 brought further studies that included eye contact, personal space and how expectations can be affected by subtle nonverbal messages. So how do all of these studies affect people today? This knowledge can be used to influence your behavior in an interview for that dream job that you're looking for. Being knowledgeable about nonverbal communication might help you get a date with that person you've always wanted to go out with. What if you are running for a political office? Wouldn't you like to know which posture, gestures or expressions will make you appear to be the right candidate? We'll look at several ways that you can use nonverbal communication to make you more successful in all aspects of your life. First of all, did you know that people form an opinion of someone that they meet within the first seven seconds? Researchers at New York University ... Get more on HelpWriting.net ...
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  • 60. Investigating Estrogen Effects On Myc And Pvt1 Expression Investigating Estrogen Effects on MYC and PVT1 Expression in Breast Cancer Using Mouse Models Background In the United States, breast cancer is currently the second most common cancer in women. The National Institute of Health states that one in every eight women will develop breast cancer in her lifetime (1). Furthermore, it is estimated by the American Cancer Institute that approximated 41,000 people died of breast cancer in the United States during 2015 (2). Since breast cancer is such a prevalent concern in society today, current and future research will help direct the treatment and detection of the disease. Studies have shown that high estrogen levels correspond with an increased risk for breast cancer in mammalian species (3). The hormone estrogen plays a key role in mammary gland development by binding to the estrogen receptor, which has previously been identified as a transcription factor. In normal cells, when estrogen binds to the receptor, a dimer forms and a conformational change occurs. The estrogen receptor travels to the nucleus where its DNA binding domain interacts with a DNA sequence found in the promoter of several genes. The estrogen receptor must form a complex with various proteins prior to initiation of transcription. In cancerous cells, the estrogen receptor becomes overly–activated by estrogen and leads to tumor formation via multiple mechanisms (3). Myelocytomatosis (Myc) and plasmacytoma variant transcription 1 (Pvt1) are two genes that were ... Get more on HelpWriting.net ...
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  • 62. Facial Expressions Facial expressions in my life are the best describer of how I feel and think about a situation. Most of my friends would say that I am a positive person that smiles when I am around other people; however, my resting face looks like I am mad at the world. I did realize this until someone took a picture and I was in the background looking utterly disgusted with life. Also, my facial expressions are extremely exaggerated; for instance, when I am surprised it is full on, mouth open and eyes wide. My friends tell me that when someone is speaking that I do not agree with or dislike, that it will make expressions of confusion or disgust. I am working on changing that, because it is important to have a neutral face in the professional world. Another ... Show more content on Helpwriting.net ... Your tone, volume, and quality, of my voice gives the person I am communicating with great insight into how I am doing. For instance, if I am about to cry the quality of my voice becomes shaky, choppy, and jumps to a higher pitch. My family always knew when I was upset because before the tears started to form, these other nonverbal characteristics began to take place. Also, when I become angry my tone of voice is more direct and how a louder volume to make sure the person understand that I am upset. You can have an angry tone, but then that can fade into a frustrated tone that is similar in sound. Moreover, I must have certain tones for different people groups that I am communicating with. When I am talking to one of my professors or instructors, I try to sound confident and direct in how I am communicating. In contrast, when I am speaking to my friends or family, I am enthusiastic, loud, and speak at a faster rate. When I become nervous or excited about a topic, the rate of my speech sometimes becomes so fast that my mouth cannot keep up with the words I am thinking. For example, I was chaplain of my senior class and I had to pray at an honors day for my graduating class. When I finished, I thought that I was smooth and calm and spoke with a slower rate; however, my friends informed me that they did not understand a word that I said. People could tell that I was nervous, even though I was actively try to change the way that I spoke in that moment. Therefore, all aspects of voice play a role in nonverbal communication. It allows a message to me transmitted clearly, instead of reading a text that can be interpreted in numerous ways. It allows people to study how confident I am in what I am saying, or to know when I am upset with ... Get more on HelpWriting.net ...
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  • 64. A Note On Gs Expression System a) GS expression system is used to select high–express cells, where glutamine synthetase (GS) is used as a selectable marker. Normal functioned cell produce use glutamate and ammonium to produce glutamine, with the presence of glutamine synthetase. To select, firstly, glutamine was eliminated from culture media as the selective pressure. Only cell with strong expression potential can overcome this condition. The cells survived this selection then proceeded to the second selection, where methionine sulphoxamine (MSX) was added into the media. MSX is a specific inhibitor of GS that stop normal GS function. Therefore, only cells whose plasmid contains both the gene of interest and a copy the glutamine synthetase (GS) gene can survive this condition. Due to the presence of GS gene in their plasmid, the glutamine synthesis was not halted in these survived high–expresser cells. These cells were hence selected for cell–line production. b) The specific productivity (qp) in mammalian cell bioreactor mean the amount of cells made per unit time per volume. To increase bioreactor productivity, the value of qp need to be maximised. To achieve a high specific productivity, a cell line with higher efficiency is needed. A well–designed and well–developed cell line requires: 1). A strong promoter strength so that genes can express effectively; 2) amplification of the system to give a reasonable system scale to exploit the production potential of the cell factory. Host cell engineering is ... Get more on HelpWriting.net ...
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  • 66. How Do ROS Influence Gene Expression And Synthesis? ROS play beneficial or harmful role based on the balance between their generation and detoxification (Abouzari and fakheri, 2015). In plants, under optimal concentration and physiological conditions they take part in pathogen defense, programmed cell death, senescence, cell signaling, gene regulation and so on (Hammond–Kosack and Jones, 1996; Grant and Loake, 2000; Breusegem et al., 2001: Blokhina et al., 2003; Laloi et al., 2004; Gechev et al., 2006). Superoxide and hydrogen peroxide in particular and ROS in general serve as intracellular signaling molecules (Scandalios, 2005) and regulate a great deal of intracellular signaling pathways (Sauer et al., 2001). Moreover, they are crucial secondary messengers (Saed–Moucheshi et al., 2014). ROS influence gene expression in three ways. ... Show more content on Helpwriting.net ... Second, they may oxidize signaling pathways directly. And third, ROS may target and modify transcription factors where the eventual effect may bring about change in gene expression. Furthermore, ROS activate MAPK signaling cascades which is central for mediating cellular responses to multiple stresses (Abouzari and fakheri, 2015). They do so through Calcium ion (Ca2+) (Price et al., 1994). Furthermore, key signaling proteins such as tyrosine phosphatase sense ROS directly through the oxidation of conserved cysteine residues (Xiong et al., 2002). On the other hand, ROS take part in redox cycling of cysteinyl thiols which is crucial to establish protein–protein and protein–DNA ... Get more on HelpWriting.net ...
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  • 68. Symbolism In St George And The Dragon Known from legend, St. George is the knight who is told to have slain a dragon in Libya to save a young woman, generally known as holding the title of princess, as expressed in Raphael's painting St. George and the Dragon. In this oil painting, the dragon is seemingly the embodiment of evil in the town while St. George is the knight that risks his life to slay and rid of the evil within the town in a somewhat chivalrous manner. In St. George and the Dragon, Raphael expresses Christianity combined with chivalry in his painting through the use of small details, symbolic representations, contrast, human figures, and the depiction of these human figures and or characters. Raphael could have done this due to the rise of Christianity in the Renaissance era and chivalry in art at the time. The expression of Christianity can be represented through symbolism, color, and the details of Raphael's painting. The dragon can be seen as symbolic of the Devil in Christianity and in turn St. George slaying the dragon can be represented as the destruction of the Devil and all evil within that setting. The color of the dragon is dark and is viciously drawn which contrasts with the white and seemingly lightness of St. George's horse that brings out the good and evil within the painting. This corresponds with Christianity as the Devil is normally depicted as dark and cruel compared to the white that represents purity of those who are righteous. Continuing on with the darkness of the dragon, in ... Get more on HelpWriting.net ...
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  • 70. Teamwork Reflection, Questions and Answers 1– What role did you play in team meetings or discussions (online or face–to–face)? What ideas or. work did you contribute? Consider your verbal (vocal or written tone, etc.) and nonverbal communication (body language, facial expressions, etc). When I have to work in a team, I try to reach success with others participants in assigned activities. I do not take the role of leader or follower. I consider myself just another participator, but always thinking about doing everything right and clean. I have always had in mind that teamwork are all those actions and activities that are carried out collectively. In order for there to be an excellent group work, I think is necessary is that the actions are developed collectively. This means that to carry out group work, the existence of an entertainer or coordination is not necessary. The collective performance of an action is sufficient, within the framework of mutual interaction. I am very careful with facial expressions because I want to create a friendly and harmonious environment around me. When I've been around other people, I've never tried to show faces expressing inattention, anxiety, anger, mockery, and laziness. Since I want people to take my ideas seriously, I always try to use facial expressions that show positivity, motivation, happiness, and energy. When I participate in online teamwork, people may not see my facial expressions, but they can perceive my desire to make things right, and the respectful attitude that I ... Get more on HelpWriting.net ...
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  • 72. Why I Am Interested Of Taking The Chromatin, Epigenetics,... "No man's knowledge can go beyond his experience", this statement by John Locke captures the essence of why I am interested in taking the Chromatin, Epigenetics, and Gene Expression course. I have always had a lifelong thirst for knowledge. As a child I was always asking questions about why or how things worked. I would always tinker with things, taking them apart and reassembling them. I questioned pretty much everything and longed to be able to do experiments and find solutions to unanswered questions on my own. In high school, I volunteered, participated in athletics, held leadership roles in several clubs, and also worked part–time. Despite my many extracurricular activities, I never lost my thirst for knowledge and academic success remained my foremost goal. To challenge myself I enrolled in the most advanced courses available and took classes offered from a nearby community college, I graduated with both a high school diploma and an Associate's Degree. Motivated by my life experiences, I began my collegiate career at Virginia Tech (VT) as a biological sciences major. In short time I decided that I would pursue a dual degree, adding psychology on as another major. It was at VT that I would get my first opportunities to further my experience alongside my knowledge. This experience would come in the form of research. As a freshman I worked in the laboratory of Dr. Karen Brewer. I conducted synthesis, purification and characterization of organometallics and refined key ... Get more on HelpWriting.net ...
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  • 74. Factors That Regulate Expression Of Stress Responsive... Science I Term Paper The research paper that this term paper is based on is Interactions Among Plant Transcription Factors Regulating Expression of Stress–responsive Genes, Sony Malhotra and R. Sowdhamini, National Center for Biological Sciences, June 2014, Bioinformatics and Biology Insights. Abstract: Plants are known to respond to abiotic stress by up or down regulating their genes. This is done by activating transcription factors. It is known that these transcription factors, though they have DNA– binding domains, interact amongst each other for the regulation of gene production. In order to find out which transcription factors interact and how, the research uses genetic and molecular structure information available in databases and computationally analyses the data. The factors that lead to the conclusion of interaction between transcription factors includes spatial proximity and possible interaction poses. Molecular docking is used to predict the interaction poses and DockScore is a scoring system used to rank the interaction poses. Introduction: Plants are immobile and therefore need mechanisms to counteract stresses that they face from their environment. Cold, high light, drought, salinity, abscisic acid, rehydration and combination of stresses like cold–drought–salt stress are common abiotic stresses that plants encounter. In order to deal with these stresses, plants either up regulate or down regulate their genes; that is, they increase the production of ... Get more on HelpWriting.net ...
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  • 76. Micro Expressions Micro–expressions are brief, involuntary facial expressions caused by a certain emotion experienced by the person. These expressions are shown on the face, and are universal in the sense that every human being, no matter what origin, or where they live it will be the same as everyone else. These expressions are also known for their difficulty in hiding them. They usually show one of the seven basic universal emotions: Disgust, anger, fear, sadness, happiness, surprise and contempt. (John) The study of Micro–expressions hasn't been around for very long. They were first discovered by psychologists Haggard and Isaacs in 1966. (Humantill). In there study they stated that they discovered these "micro–momentary" facial expressions while ... Show more content on Helpwriting.net ... By using the many ways to identify distrust and deceit, such as frowns, wrinkles, eyebrows, and smirks, police, judges, and FBI workers can use the techniques of identifying micro–expressions to see whether or not a criminal (or terrorist) is lying, or trying to hide something. Unless they have had extensive training, this would be a difficult test to pass. In court, Mark Frank has been hired by judges to help them identify the liars from the honest suspects. (ScienceDaily) When the viewer sees a person's face, then notice the obvious things; eyes, smile, nose, and general expression with the added micro–expression here and there. When you view a liars face, however, you see more than just that. In some cases, you'll see a person suppressing information and trying to keep from their secrets. This causes an unusual appearance and shows many micro–expressions from hiding the truth of their feelings. Sometimes, a micro–expression can show that something isn't right in a situation. For example; an interrogation. If the suspect is obviously holding back on something and micro–expressions are written all over their face, they are hiding something or something is amiss. This could lead to finding out that a person is being forced to hide facts. (Maureen, 2009). To train to be able to see micro–expressions means practicing looking at people when asking questions and having general conversation. You would have to learn how to distinguish the little flaws in a ... Get more on HelpWriting.net ...
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  • 78. The Common Core Standards For Grade 6 Overview and Goals: This is one unit in a yearlong 6th grade math course. In this unit, the students will learn about expressions and equations. Students will learn how letters stand for numbers, and be able to read, write, and evaluate expressions in which these letters take the place of numbers. In this unit, students will learn how to identify parts of an expression using various new terms. They will learn to solve both one– and two–step equations. Students will be able to distinguish between dependent and independent variables. They will be able to identify the dependent and independent variables of equations and in turn, be able to graph them. Various activities to be completed inside and outside of the classroom will be used to show ... Show more content on Helpwriting.net ... Include expressions that arise from formulas used in real world problems. Perform arithmetic operations, including those involving whole–number exponents, in the conventional order when there are no parentheses to specify a particular order (Order of Operations). 6.EE.A.3 Apply the properties of operations to generate equivalent expressions. 6.EE.A.4 Identify when two expressions are equivalents (i.e., when the two expressions name the same number regardless of which value is substituted into them). Reason about and solve one–variable equations and inequalities. 6.EE.B.5 Understand an equation or inequality as a process of answering a question: which values from a specified set, if any, make the equation or inequality true. Use substitution to determine whether a given number in a specified set makes an equation or inequality true. 6.EE.B.6 Use variables to represent numbers and write expressions when solving a real–world or mathematical problem; understand that a variable can represent an unknown number, or, depending on the purpose at hand, any number in a specified set. 6.EE.B.7 Solve real world and mathematical problems by writing and solving equations of the form x + p = q and px = q for cases in which p, q, and x are all nonnegative rational numbers. 6.EE.B.8 Write an inequality of the form x > c or x < c to represent a constraint or condition in a real–world or mathematical problem. Recognize that inequalities of the form x > c or x > c have infinitely ... Get more on HelpWriting.net ...