Membranes - Ch 7 (can be fun!)

1. Membranes - Ch 7(can be fun!)

2. Figure 8.1 Artificial membranes (cross sections)

4. Figure 8.4 The fluidity of membranes

5. Figure 8.2 Two generations of membrane models

6. Figure 8.6 The detailed structure of an animal cell’s plasma membrane, in cross section

8. Figure 8.3 Freeze-fracture and freeze-etch

9. Figure 8.5 Evidence for the drifting of membrane proteins

11. Figure 5.11

12. Water moves easily across membranes

13. Aquaporins

14. Aquaporin - side view Tetramer Monomer

15. Aquaporin tetramer (ribbon model) Top view Side view

17. Water flow through aquaporins

19. Figure 5.12

20. Figure 5.13

21. Figure 5.14

22. Figure 8.13 The contractile vacuole of Paramecium: an evolutionary adaptation for osmoregulation

23. Figure 5.15

24. Unnumbered Figure 05_UN86a

25. Transporter types

26. Channel protein

27. Gated channel

28. Active transport consumes energy

29. Figure 5.16

30. Digression on ATP (which will be covered in more detail in the next Ch)

32. Co-transport mechanisms use an ATP-powered pump to create a gradient, and then use the gradient as an energy source to transport another solute.

33. The sodium / potassium pump

34. The Na+ K+ pump creates a membrane potential

35. Figure 8.19 The three types of endocytosis in animal cells

36. Figure 5.17

37. Figure 5.18

38. Figure 5.19

39. Figure 5.20

40. Fini