1. Aim# 13: Active vs. Passive Transport http://programs.northlandcollege.edu/biology/biology1111/animations/passive1.swf http://www.phschool.com/science/biology_place/biocoach/biomembrane1/structure.html http://www.teachersdomain.org/asset/tdc02_int_membraneweb/

2. 1. How does the smell of baked cookies spread throughout a house?

3. 2. Passive vs. Active Transport: Passive Transport - no cellular energy required to occur - goes with the concentration gradient - diffusion - facilitated diffusion - osmosis Active Transport - requires cellular energy to occur - goes against the concentration gradient - Endocytosis/Exocytosis - Sodium Potassium Pump

4. 3. a. Concentration: b. Concentration gradient:

5. 4. Diffusion: Passive Transport

6. 5. Dynamic Equilibrium: Dynamic Equilibrium

9. 6. Factors affecting diffusion: Concentration Temperature Pressure Think about the membrane's selective permeability for a moment. What other factors might affect the rate of diffusion?

12. 7. Facilitated Diffusion: Facilitated Diffusion Passive Transport

13. 8. Osmosis: Passive Transport

14. 9. Solutions: Isotonic: Hypotonic: Hypertonic:

19. 8. On the inside of a cell, it is 75% water and 25% salt. On the outside of the cell it is 60% water, 40% salt. a.Will water move into or out of the cell? b.Will the cell shrink or swell? c.Is the solution outside of the cell hyper or hypotonic? 9. On the inside of a cell, it is 30% water and 70% sugar. On the outside of the cell it is 90% water, 10% sugar. a.Will water move into or out of the cell? b.Will the cell shrink or swell? c.Is the solution outside of the cell hyper or hypotonic?

20. 1. Y or N: Is water able to diffuse through a cell’s selective permeable membrane? 2. Y or N: Are solutes (particles) always able to diffuse through a cell’s selective permeable membrane? 3. What is the determining factor that will or will not allow solute (particle) diffusion? _______________

21. 1 2 3 5 4 7 9 8 6

22. 10 11 12 13 14 15 16 17 18

24. 10. Active Transport: Why does active transport require energy? Active Transport

25. ~ How is facilitated diffusion different from active transport? ~ Why is cell transport so important to cells?

26. 11. ATP:

27. 12. Na+/K+ ATPase Pump: - sodium-potassium pump

28. 13. Coupled transport: -"Piggyback"

29. 14. Endocytosis:

30. 15. Exocytosis: Active Transport animations

34. Membrane and Transport Review Na+/K Pump, Endocytosis, Exocytosis