Chapter 7 Homework Questions

1. What are the major components of cell membranes?

2. What is the difference between isotonic, hypertonic and hypotonic?

3. Describe the fluid mosaic model of cell membranes.

4. How would the composition of plants and animal cell membranes differ?

5. What is a glycoprotein? What is their role in plasma membranes?

6. Describe diffusion, facilitated diffusion and active transport?

7. What processes use active transport?

8. If a Paramecium were to swim from a hypotonic medium to a hypertonic medium would the activity of the contractile vacuole increase or decrease? Explain.

9. What are endocytosis and exocytosis? What cell processes involve these processes?

10. What is receptor mediated endocytosis? Would this process be an important aspect of disease?

11. What will be the effect of extensive irrigation on agricultural production over time? Why?