Transcript lec09-10.ppt

1. Lipid bilayer – amphipathic molecules
2. Davson-Danielli model
3. Singer-Nicholson fluid mosaic model
4. Evidence for fluid mosaic – freeze-fracture study
5. Fluidity of cell membranes
6. Translational movement of membrane proteins
7. Survey of membrane protein functions
8. Current fluid mosaic model
9. Diffusion
10.Osmosis
11. Effects of osmotic pressure imbalances
12. Carrier-mediated passive transport
13. Carrier-mediated systems show saturation kinetics
14. Active transport – sodium/potassium ‘pump’
15. Active transport – hydrogen ion ‘pump’
16. Secondary active transport (& cotransport)
17. Summary of passive & active transport
18. Endocytosis – bulk transport
19. Exocytosis – bulk transport
20. Signaling via junctions
21. Signaling via secretion
22. Steps in chemical signaling
23. Formation of a second messenger
24. Ion channel activation
25. Alteration of gene expression
26. Amplification cascade I
27. Amplification cascade II