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Membrane Transport

Membrane Transport. Diffusion. With concentration gradient Unequal amounts of particles Movement of particles From high To Low. Dynamic Equilibrium. Equal concentrations are reached Not the same volumes Continued movement across the membrane Not gain or loss. Osmosis.

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Membrane Transport

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  1. Membrane Transport

  2. Diffusion • With concentration gradient • Unequal amounts of particles • Movement of particles • From high • To Low

  3. Dynamic Equilibrium • Equal concentrations are reached • Not the same volumes • Continued movement across the membrane • Not gain or loss

  4. Osmosis • Movement of water • From high to low • Across a selectively permeable membrane

  5. Isotonic Solutions • Iso- equal • No change in concentrations • Water still moves • Same amount moves in as moves out • Both sides of membrane are the same

  6. Hypotonic Solution • Hypo- under • Out side of cell • Less dissolved substance • More water • Water moves into cell

  7. Hypertonic Solution • Hyper- Over • Out side of cell • More dissolved substance • Less water • Water moves out of cell

  8. Passive Transport • Cell uses no energy • From high to low Plasma membrane Concentration gradient

  9. Facilitated Diffusion • Type of passive transport • Use transport proteins • Channel proteins • Carrier proteins • Changes shape • From high to low

  10. Active Transport • Cell uses energy • Against concentration gradient • From low to high • Carrier Proteins • Molecule binds with carrier protein • Energy then used to change shape • Molecule released on other side • Carrier protein returns to original shape

  11. Large Particle Transport • Not through membrane • Requires energy • Exocytosis- out

  12. Large Particle Transport • Endocytosis- in

  13. Types of Endocytosis Pinocytosis: liquid Phagocytosis: Solid

  14. What about freshwater/saltwater cells?

  15. Membrane Transport Bioflix At my website you can find this and the link below has a bunch of tutorials, videos, etc. • Transport in action

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