1. Section 1.2 Basic Cell Structure
Mrs. Leos

2. Bell Work
Draw a Venn Diagram to compare and contrast multicellular and unicellular organisms.

3. Multicellular: Unicellular: Both:
Many cells, very complex, easier to see
Unicellular:
One cell, cannot be seen directly
Both:
Need energy, materials, and living space

4. REVIEW- Cell Smallest living unit of an organism
Grow, reproduce, use energy, adapt, respond to their environment
Many cannot be seen with the naked eye

5. Prokaryotes
Single celled organism
Lacks a cell nucleus
Unicellular

6. Eukaryotes Organism made up of cells that have a nucleus
May have billions of cells
Human body has at least 85 different cell types

7. Common structures Organelles –
smaller parts of the cell with specific functions

8. Controls what enters and leaves the cell
Cell Membrane
Acts as a gatekeeper
Controls what enters and leaves the cell

9. Cell wall
Provides additional structure and protects the cell from pressure caused by movement of water
Animal cells do not have walls

10. Cytoplasm Organelles are surrounded by a jelly like substance
Primary component is water

11. Nucleus Controls activity of the cell Round or oval structure
Typically found in the middle of the cell
Appears darker than surrounding material

12. Ribosome Make proteins for cellular use and communication
May be attached to endoplasmic reticulum

13. Endoplasmic reticulum
Make and transport proteins

14. Vacuole
Large organelle, without specific shape
Stores waste

15. Golgi Apparatus Adds modifications to unfinished proteins
Makes lysosomes
Look like a thick elastic band that has been folded several times

16. Lysosome
Small round
Store enzymes that break down food into chemical compounds

17. Mitochondria
Use oxygen to get energy from processing food
Rod shaped

18. Chlorplast
Found in plants and some other organisms

19. Ok, let’s make sense of this
On the left side of your notebook
Demonstrate your understanding
Write a 5-7 sentence summary