Membrane Transport

1. Membrane Transport Lion Den Slide Collection By Kevin Patton User Manual Click each slide to advance it

2. Passive Transport Requires no metabolic energy provided by the cell

3. Diffusion reduces or eliminates a concentration gradient Collisions of particles spread the particles out Solute Solution Solvent NET movement Concentration gradient HIGH concentration LOW concentration Equilibrium SAME concentration SAME concentration

4. Simple diffusion is passive movement of solutes through a membrane Concentration gradient HIGH concentration LOW concentration

5. Simple diffusion is passive movement of solutes through a membrane Net diffusion down the concentration gradient may result in equilibrium(a dynamic balance of concentration) NET movement Equilibrium SAME concentration SAME concentration

6. Channel Concentration gradient HIGH concentration LOW concentration

7. NET movement Equilibrium SAME concentration SAME concentration

8. GATED channels Channels are SPECIFIC Channels FACILITATE diffusion LOW concentration GATED channel Channel Concentration gradient HIGH concentration

9. Impermeant Solute Impermeant solutes cannot cross the membrane NO net movement Concentration gradient HIGH concentration LOW concentration

10. Aquaporins are tiny channels that facilitate water movement

11. Osmotic pressure builds up as water moves into cell Impermeant Solute Osmosis is passive movement of water when solutes are impermeant Water molecule WATER gradient LOW concentration SAME concentration HIGH concentration SAME concentration

12. Carrier NET movement Concentration gradient HIGH concentration LOW concentration Equilibrium SAME concentration SAME concentration

13. Carriers FACILITATE diffusion LOW concentration Carrier Concentration gradient HIGH concentration

14. Carriers FACILITATE diffusion LOW concentration Carrier Concentration gradient HIGH concentration

15. Channels & carriers FACILITATE diffusion LOW concentration Channel Carrier Concentration gradient HIGH concentration

16. Active Transport Requires metabolic energy (in the form of ATP) provided by the cell

17. Pumps are ACTIVE carriers HIGH concentration Pump Concentration gradient ADP Pi ATP LOW concentration

18. Pumps create & maintain a concentration gradient Pumps are ACTIVE carriers HIGH concentration Pump Concentration gradient ADP Pi ATP LOW concentration

19. Vesicle-mediated transport Bulk transport of material Requires work by the cytoskeleton

20. Endocytosis moves material into the cell

21. Endocytosis moves material into the cell ADP Pi ATP Cytoskeleton moves the plasma membrane

22. Cytoskeleton moves the plasma membrane

23. Cytoskeleton moves the plasma membrane

24. Vesicle forms as membrane folds inward

25. Vesicle forms as membrane folds inward

26. Vesicle forms as membrane folds inward Vesicle forms as membrane folds inward and is pulled inward by the cytoskeleton

27. Pinocytosis moves fluids into the cell ADP Pi ATP

28. Pinocytosis moves fluids into the cell

29. Pinocytosis moves fluids into the cell

30. Pinocytosis moves fluids into the cell

31. Pinocytosis moves fluids into the cell

32. Pinocytosis moves fluids into the cell

33. Phagocytosis moves solids into the cell

34. Phagocytosis moves solids into the cell ADP Pi ATP

35. Phagocytosis moves solids into the cell

36. Phagocytosis moves solids into the cell

37. Phagocytosis moves solids into the cell

38. Phagocytosis moves solids into the cell

39. Phagocytosis moves solids into the cell

40. Exocytosis moves material out of the cell ADP Pi ATP

41. Exocytosis moves material out of the cell

42. Exocytosis moves material out of the cell

43. Exocytosis moves material out of the cell

44. Exocytosis moves material out of the cell

45. Exocytosis moves material out of the cell

46. Exocytosis moves material out of the cell