Introduction to Cell organelels of a eukaryotic cells...................................................................................................................................................................................................................... CELL ORGANELLES ........

1. Cell Organelles
Eukaryotic Cells

2. Cell Parts
• Cells – the basic unit
of life.
• Organelles - small
structures inside a
cell with specific
functions.

3. A) Cell Membrane/Plasma
Membrane
1. Function: Regulates materials entering and
exiting the cell and serves as a boundary from
outside environment.
2. Structure: Two layers of phospholipids, proteins
Cell
membrane

4. B) Cytoplasm
1. Function: All cell contents that lie between the cell
membrane and the nucleus. (organelles + cytosol)
a. Cytosol = liquid portion/non-organelles.
2. Structure: Made up of fluid and organelles except
for nucleus
Cytoplasm

5. C) Nucleus
1. Function: Controls most of a cell’s
processes and stores DNA.
2. Structure: Membrane bound, contains DNA
Nucleus

6. G) Endoplasmic Reticulum
Function and Structure:
a. Rough ER: A membrane system with ribosomes on
its surface where proteins are assembled.
b. Smooth ER: A membrane system where lipids are
assembled.
Rough ER
Smooth ER

7. H) Ribosomes
1. Function: Makes proteins.
2. Structure: Small circular organelles
Ribosomes
Free
Ribosomes

8. J) Lysosomes
1. Function: Packets of enzymes that break
down materials in a cell.
2. Structure: Small membrane-bound
organelles
Lysosomes

9. K) Mitochondria
1. Function: Produce energy for the cell – site
of cellular respiration.
2. Structure: Double membrane-bound, kidney
shaped, contains its own DNA
Mitochondria

10. L) Golgi Apparatus
1. Function: Modifies, sorts, and packages
proteins.
2. Structure: Pancake-shaped layered
organelle
Golgi
Apparatus

11. M) Cytoskeleton
1. Function: Provide support and structure for
the cell.
2. Structure: Microtubules and microfilaments
Microfilaments
Microtubules

12. P) Chloroplasts (Plants only)
1. Function: site of photosynthesis (converting
sun and CO2 into sugar).
2. Structure: Membrane bound organelles that
contain chlorophyll
Chloroplasts

13. Q) Cell Wall (Plants only)
1. Function: Provides support for the cell and
the plant.
2. Structure: Made of cellulose
Cell Wall

14. Cell Parts Analogy
• Create an analogy (besides the city
analogy) for the cell and its parts
• Possible ideas:
– Stadium
– School
– Country
– Restaurant
– House
– Mall
– Waterpark

15. Stadium Example:
• Cell membrane: wall of stadium, gates
• Cytoplasm: everything inside the stadium.
• Nucleus: the control room for the stadium.
• Etc…