physiology lab #2

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Author:
rleighn25
ID:
98079
Filename:
physiology lab #2
Updated:
2011-08-30 17:42:30
Tags:
physiology
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Description:
Diffusion/Osmosis
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  1. Solute
    Molecule
  2. Solvent
    Liquid portion
  3. Solution
    The result of the solute +solvent= solution
  4. Diffusion
    • passive movement of water from high to low concentration
    • net movement of molecule
  5. Concentration gradient
    the differemce in a concentration across a membrane
  6. Passive transport
    movement of molecules across the plasma (cell) membrane that doesn't require energy
  7. Active transport
    movement of molecules across the cell membrane that requires energy
  8. Permeabilty
    the ease at which molecules pass through the cell membrane
  9. Osmosis
    net movement (diffusion) of water from high to low concentration
  10. Osmotic pressure
    • amount of pressure required to stop osmosis from occuring
    • the more highly concentrated a solution is said to have a greater osmotic pressure

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