1. Review Lecture II

2. 3 pathways to degradation in the lysosome

3. 3 possible fates of receptor proteins in an epithelial cell

4. cholesterol is released in lysosome

5. Glucose transporters can be stored in recycling endosomes

7. 3 best understood protein sorting pathways in the trans Golgi network

8. Intracellular signaling pathways

9. 4 types of intercellular signaling

11. Autocrine signaling allow a group of cells but not a single cell to respond to a differentiation signal coordinates decisions by a group of identical cells

12. An animal cell depends on extracellular signals to survive or divide

13. An animal cell depends on extracellular signals to differentiate. Without extracellular signals the cell will die

14. Extracellular signaling molecules can bind to intracellular receptors

15. Signaling molecules that bind to nuclear receptors are small and hydrophobic

16. G-protein accepts GTP and disassemble into two active subunits

17. Activation of gene transcription by cAMP

19. Ca 2+ and diacylglycerol activate protein kinase C

20. Ras is activated by tyrosine kinase

21. Tubulin heterodimer is the microtubule subunit

22. Microtubule structure

23. Structure of actin

24. Growing and shrinking microtubules

25. Model of intermediate filaments

26. Polymerization of tubulin is nucleated by the γ- tubulin ring

28. Model for actin filament nucleation by ARP complex

30. Actin bundles in a microvillus

31. Actin filament dynamics and platelet activation in

32. Accessory proteins in a sarcomere

33. Two membrane system that relays signal to contract muscle cells

34. Ca 2+ relieves tropomyosin blockage

35. Attachment of dynein to cargo filled vesicle

38. CdK activity can be suppressed by inhibitory proteins

39. Assembly of pre-replicative complex during G1 phase

41. Overview of cell cycle control system

42. Caspase cascade occurs during apoptosis

44. Mitogens stimulate G1-Cdk and G1/S-Cdk activities

45. Cell growth like cell division is also stimulated by extracellular signals

46. Summary of cell junctions found in the cell

47. Summary of junctional and non-junctional adhesive mechanisms

48. GAG and its core protein form proteoglycan

50. Fibroblast surrounded by collagen fibrils

51. Fibronectin is an extracellular protein that helps cells attach to the matrix

53. Integrin is a transmembrane heterodimer

54. FAK deficient fibroblasts have more focal adhesions and can not spread