2. Diffusion, Osmosis, & Active Transport

3. What is the other name for the Cell Membrane? Fluid Mosaic Model

6. Passive Transport Requires no energyRequires no energy Flows “downhill” from an area of higher concentration to an area of lower concentration.

7. Diffusion 1. Diffusion requires no energy 2. It is the movement of molecules from a high concentration to a low concentration

8. Diffusion

9. Diffusion

10. Facilitated Diffusion Facilitated Diffusion uses a membrane protein to get molecules across the membraneFacilitated Diffusion uses a membrane protein to get molecules across the membrane It is still diffusion so it requires no energy and moves from high to low concentrationIt is still diffusion so it requires no energy and moves from high to low concentration

11. Facilitated Diffusion

12. Osmosis Osmosis is the movement of water across a semi permeable membraneOsmosis is the movement of water across a semi permeable membrane Osmosis requires no energyOsmosis requires no energy

13. Osmosis

14. Osmosis

15. Osmosis

16. Hypertonic Solution

17. Hypotonic Solution

18. Types of Transport

19. Active Transport Active transport requires energyActive transport requires energy Moves molecules from low concentration to high concentrationMoves molecules from low concentration to high concentration Requires use of special membrane proteinsRequires use of special membrane proteins

20. Active Transport Active transport also includes endocytosis and exocytosisActive transport also includes endocytosis and exocytosis Endocytosis is when molecules are brought in to the cell through movement of the membraneEndocytosis is when molecules are brought in to the cell through movement of the membrane Exocytosis is when molecules are pushed out of the cell due to movement of the membraneExocytosis is when molecules are pushed out of the cell due to movement of the membrane

21. Active Transport

23. Na-K Ion Pump (Active)

24. Endocytosis

25. Endocytosis

26. Endocytosis - Pinocytosis

27. Endo & Exo Cytosis

29. Exocytosis

30. Exocytosis

31. Exocytosis