Passive Transport

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Passive Transport

  1. 1. Passive Transport Ch 8
  2. 2. Some molecules like water can pass through the plasma membrane by simple diffusion
  3. 3. If the cells uses NO_______ to move the particles, the movement across the membrane is called __________________ ENERGY PASSIVE TRANSPORT
  4. 4. Passive transport of material across a membrane using transport proteins is called _______________ Facilitated Diffusion
  5. 7. Some proteins are _______ proteins. This allows movement with the concentration gradient and requires NO ENERGY from the cell. Channel
  6. 8. Channel Protein
  7. 10. Some proteins are _______ proteins. They have a very specific shape and allow only one molecule (or group of closely related molecules) to pass through. Carrier
  8. 11. Carrier Protein Step one Step two
  9. 12. Channel Carrier
  10. 13. One molecule in one direction More than one molecule together Move molecules simultaneously in opposite directions
  11. 14. All of these are examples of PASSIVE TRANSPORT and require NO ENERGY FROM THE CELL Diffusion implies that the molecules are all moving with (down) the concentration gradient

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