exam

1. Identify the three major cell-to-cell junctional complexes and, in one sentence each describe their function. (3 marks)
2. Explain the difference between passive and active transport (4 marks)
3. Describe five key steps in the process of glucose stimulated insulin secretion from pancreatic beta-cells. (5 marks)
4. Name the major polarity complexes and identify the proteins that are in each complex. (2 marks)
5. Describe the asymmetry of membrane lipids in a healthy cell. (2 marks)
6. What role do tight junctions play in the maintenance of cell polarity? (1 mark)
7. How does the degree of saturation of acyl-lipid tails influence the properties of cell membranes? (4 marks)
8. Membrane Proteins can have non-transport functions such as of cell-to-cell adhesion, scaffolding and cell-to-cell recognition. Describe the mechanism of one of these non-transport functions (5 marks).
9. The microtubular system uses motor proteins to transport cargo. Identify the families of motors and describe, in outline, how ATP works to produce movement. (2 marks)
10. Name one component of the cytoskeleton and describe how it is formed. (2 mark)
11. Receptors (eg. GPCRs) and ion channels...