1. Opener: Cell Images
How are they different?

2. Cell Structure and Function

3. Cells
Smallest living unit
Most are microscopic

4. Cell Theory Reviewed All living things are made of cells
Smallest living unit is the cell
All cells arise from preexisting cells
(this principle discarded the idea of
spontaneous generation)

5. Cell Types
Prokaryotic
Eukaryotic

6. Prokaryotic Cells First cell type on earth
Cell type of Bacteria and Archaea

7. Prokaryotic Cells No membrane bound nucleus
Nucleoid = region of DNA concentration
Organelles not bound by membranes

8. Eukaryotic Cells Nucleus bound by membrane
Include fungi, protists, plant, and animal cells
Possess many organelles
Protozoan

9. Representative Animal Cell

10. Representative Plant Cell

11. Cell Wall Supports & shapes plant cells.
Found in plants, fungi, & many protists
Surrounds cell membrane
City Wall

12. Cell Membrane
Boundary that protects cells. Controls what goes in and out of cell.
Found in ALL cells.
City Border

13. Nucleus City Hall Controls cell activities; “brain”; contains DNA.
Double membrane
Contains
Chromosomes
Nucleolus
City Hall

14. DNA Hereditary material Chromosomes Chromatin DNA Protiens
Form for cell division
Chromatin

15. Nucleolus Most cells have 2 or more Directs synthesis of RNA
Forms ribosomes

16. Cytoplasm Jelly-like fluid that supports organelles (cell parts).
components of cytoplasm
Interconnected filaments & fibers
Fluid = cytosol
Ground

17. Golgi Apparatus (Golgi Body)
Processes & packages materials into vesicles (small packets).
Post Office

18. Endoplasmic Reticulum
Transports molecules (materials) around the cell.
Network of interconnected membranes
Two types
Rough endoplasmic reticulum
Smooth endoplasmic reticulum
Highways

19. Golgi Apparatus Function
1. Molecules come in vesicles
2. Vesicles fuse with Golgi membrane
3. Molecules may be modified by Golgi
4. Molecules pinched-off in separate vesicle
5. Vesicle leaves Golgi apparatus
6. Vesicles may combine with cell membrane to secrete contents

20. Ribosomes Makes protein for the cell. “ribs” Butcher Shop
Small bumps on Rough ER
Butcher Shop

21. Mitochondria Break down sugar (food) molecules to release energy.
Energy  ATP molecule
Power Plant

22. Vacuoles Sac that stores water, food, waste Warehouse
More common in plants than animals
Warehouse

23. Lysosomes Break down large food, old cell parts, invaders. “Lysol”
Contain digestive enzymes.
Found in animal cells
Recycling Center

24. Chloroplasts Uses sun’s energy to make food for plant. Photosynthesis.
Found in plants
Solar Panels

25. Vesicles
Small sacs or packets that move material in and out of cell. Very small.
Vehicle / Trucks

26. End Chapter 5