Cellular membranes and transport

Card Set Information

Author:
kirstenp
ID:
220795
Filename:
Cellular membranes and transport
Updated:
2013-05-23 07:12:01
Tags:
Biology transport
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Description:
Biology cells, diffusion, osmosis, passive, active
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  1. What is passive transport?
    • Requires no energy
    • Small non-polar molecules eg. 02 CO2
  2. What id diffusion?
    The net movement form area of high concentration to area of low concentration (down the concentration gradient)
  3. What is osmosis?
    • Diffusion in water
    • Movement from high concentration to low concentration
  4. What the types of passive transport?
    • Diffusion
    • Osmosis
    • Channel mediated
    • Carrier mediated
  5. What is active transport?
    • Transport of molecules against the concentration gradient
    • Requires energy
  6. What are the two types of bulk transport?
    • Exocytosis: solid particles out
    • Endocytosis: solid particles in the cell

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