2. Cell Membrane Structure and Function

3. Cell Membrane Structure Pg. 95 A.Function 1.Allows for movement into and out of the cell 2.Protection / Support 3.Maintains homeostasis

4. Cell Membrane Structure Pg. 95 B. Fluid Mosaic Model 1. Fluid – moves

5. Fluid

6. Cell Membrane Structure Pg. 95 B. Fluid Mosaic Model 1. Fluid – moves 2. Mosaic – many parts

7. Mosaic 1.Phospholipids 2.Membrane Proteins 3.Cholesterol 4.Surface Carbohydrates

8. Fluid-Mosaic Model

9. Cell Membrane Structure Pg. 95 C. Parts 1.Phospholipid Bilayer

10. Phospholipid Bilayer

11. Cell Membrane Structure Pg. 95 C. Parts 2.Proteins Carrier – moves large particles

13. Many Functions of Membrane Proteins Outside Plasma membrane Inside Transporter Cell surface receptor Enzyme activity Cell surface identity marker Attachment to the cytoskeleton Cell adhesion

14. Proteins

15. Cell Membrane Structure Pg. 95 C. Parts 3.Lipids – (Cholesterol)

16. Cholesterol

17. Cell Membrane Structure Pg. 95 C. Parts 4.Carbohydrates cell recognition, cell signaling, cell adhesion

18. Carbohydrates

19. Cell Membrane Structure Pg. 95 D. Description 1. Semi-permeable 2. Only allows certain materials through

20. Semi-Permeable

21. Pg. 94