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Membrane Transport

This user manual covers the basics of membrane transport, including passive and active transport, diffusion, osmosis, and vesicle-mediated transport. It provides a comprehensive understanding of the concepts and processes involved in moving molecules and ions across cell membranes.

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Membrane Transport

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  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

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