1. CH. 5 sec. 2 Answers

2. 1. With active transport, materials “move up” their concentration gradient. Explain what this means.

3. 1. With active transport, materials “move up” their concentration gradient. Explain what this means.

4. 2. Why are the carrier proteins that serve in active transport often called cell membrane “pumps?”

5. 2. Why are the carrier proteins that serve in active transport often called cell membrane “pumps?”

6. 3. What most often supplys the energy for the cell membrane pumps?

7. 3. What most often supplys the energy for the cell membrane pumps?

8. 4. What does the sodium-potassium pump transport?

9. 4. What does the sodium-potassium pump transport?

10. 5. Endocytosis and exocytosis are types of which type of transport?

11. 6. Define Endocytosis.

12. 6. Define Endocytosis.

13. 7. What is the difference between pinocytosis and phagocytosis?

14. 7. What is the difference between pinocytosis and phagocytosis?

15. 8. What are the animal cells called that use phagocytosis to ingest bacteria and viruses that invade the body?

16. 8. What are the animal cells called that use phagocytosis to ingest bacteria and viruses that invade the body?

17. 9. Define Exocytosis.

18. 9. Define Exocytosis.