2. There are two types of passive transport:

3. Diffusion and Concentration Gradients

4. Simple Diffusion

5. Facilitated Diffusion

6. Take-home message 3.8

7. Take-home message 3.8

8. 3.9 Osmosis is the passive diffusion of water across a membrane.

9. Cells in Solution

11. How do laxatives relieve constipation?

12. The Direction of Osmosis

13. Take-home message 3.9

14. 3.10 In active transport, cells use energy to move small molecules.

15. Primary Active Transport: Uses Energy Directly from ATP

16. Active Transport

17. Secondary Active Transport

18. Take-home message 3.10

19. Take-home message 3.10

20. 3.11 Endocytosis and exocytosis are used for bulk transport of particles.

21. Two types of endocytosis:

25. When a woman nurses her baby, proteins are released from the mammary cells, accumulate in the ducts of the breast, and flow out of the nipple. Which process listed below is involved?

26. Take-home message 3.11

27. Take-home message 3.11

28. Take-home message 3.21