1. Chapter 4 - Cell Structure and Function
The printed out notes are more detailed than these slides, you are expected to read the chapter and your notes - anything is fair game on the test, but the cell chapter is largely review.

2. Quick: Grab some scratch paper and quickly discuss with your partner what you remember from freshman biology about the cell.

3. Early Contributions
Hooke
Leeuwenhoek
Schleiden
Schwann
Virchow

4. The Cell Theory 1. Every living organism is made of one or more cells.
2. The cell is the basic unit of structure and function. It is the smallest unit that can perform life functions.
3. All cells arise from pre- existing cells.
*Why is the Cell Theory called a Theory and not a Fact?

5. Figure 4.2

6. Figure 4.3
Figure 4.3

7. Single Cheek Cell - at different illuminations
Figure 4B

8. ALL CELLS HAVE:
1. Cell Membrane         
Phospholipid Bilayer  (double layer)       

9. 2. Genetic Material 3. Cytoplasm (cytosol)
ORGANELLES float within cytoplasm and perform specific functions

10. Prokaryote vs Eukaryote Cells
Endosymbiosis theory: 
*Mitochondria & Chloroplasts have their own DNA, and may have existed independently at one time
Animation at Microbiological Concepts

11. Prokaryote Cells

12. Figure 4.4a
Figure 4.4

13. Eukaryotes

15. Quick Recap....... 1. What are the two main types of cells?
2.  Which one is larger?  
3.   Which one does not have a membrane bound nucleus?
4.  What are the three main parts of the cell (that all cells have)?
5.  What are the 3 components of the cell theory?
6.  What theory explains how eukaryotes evolved?