Cell Membrane Transport

Card Set Information

Author:
cshumaker
ID:
111916
Filename:
Cell Membrane Transport
Updated:
2011-10-24 21:24:23
Tags:
active transport passive
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Description:
Physiology of transport of molecules through the cell membrane
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  1. What type of transport do ionophores mediate?
    passive transport
  2. What molecules occur in higher concentrations outside the cell?
    Na+, Cl-, HCO3-, glucose, Ca++
  3. What molecules occur in higher concentrations inside the cell?
    K+, proteins
  4. forms a hydrophobic exterior coating on a naturally hydrophilic molecule and makes it lipid soluble
    mobile ion carrier
  5. form ion-permeable channels in membrane and enable otherwise non-soluble hydrophilic molecule soluble
    channel formers
  6. an example of a channel former
    gramicidin A
  7. an example of a mobile ion carrier
    valinomycin
  8. What limits the maximum rate of facilitated diffusion?
    vmax of the carrier protein
  9. Most common example of primary active transport
    ATP
  10. Do symporters use ATP?
    NO!!!
  11. Osmotic pressure is attributed to...?
    osmolarity of the solution
  12. -similar to facilitated diffusion
    - rate limited by vmax of the transporters
    saturation

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