Download Test Review for AP Biology Chapter 5 What molecules make up the

Test Review for AP Biology Chapter 5
1. What molecules make up the cell membrane? Be able to answer multichoice questions and well
as label.
2. What is the function of cholesterol in the cell membrane?
3. Know how temperature effects the cell membrane. Ie. What is one of the ways that a
membrane of winter vegetation can remain fluid when cold?
4. For a protein to be an integral membrane protein would it need to be hydrophilic, hydrophobic
or amphipathic?
5. Why do unsaturated fatty acids help keep any membrane more fluid at lower temperatures?
6. What is the primary function of glycolipids and glycoproteins in the cell membrane?
7. What type of protein would NOT be imbedded in the phospholipid bilayer?
8. Why are lipids and proteins free to move laterally in the cell membranes?
9. Understand the types of transport both active and passive in a cell membrane.
10. Have a good understanding of osmosis and diffusion.
11. Understand the terms hypertonic, isotonic, and hypertonic and which way water will move
based on these descriptions.
12. Know the types of proteins in the cell membrane, channel, aquaporin, carrier…
13. Why does water pass quickly through a cell membrane?
14. Know what will happen to cells in in hypertonic, isotonic, and hypotonic solutions
15. Which membrane activities require energy from ATP hydrolysis?
16. What is the voltage across a membrane called?
17. Why is sodium-potassium pump called and electrogenic pump?
18. When material taken in by endocytosis, what organelle will then digest the material?
19. In receptor-mediated endocytosis, receptor molecules initially project to the outside of the cell.
Where do they end up after endocytosis?
20. Be able to work a water potential problem like the ones we went over this week. I will give you
formulas, you are just to figure potential and direction of osmosis.
There will be multiple scenarios on the test describing solutions where there is hypertonic, or hypotonic
solutions ie. Which direction would a solution move if the cell were .15 M and the surrounding
environment were .45 M concentration. Would the cell shrink or swell, which way does the water
move?