Movement of Membranes

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Author:
ht2lvu
ID:
46955
Filename:
Movement of Membranes
Updated:
2010-11-03 01:51:24
Tags:
human anatomy physiology membranes
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Description:
Proteins & Membranes
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  1. phospholipid bilayer
    allows fat to enter
  2. top of phospholipid
    • polar, hydrophillic (h2o loving)
    • barrier: most things in cell is h20 loving
  3. bottom of phospholipid bilayer
    • nonpolar, hydrophobic (h2o hating)
    • stabalizer
  4. phospholipid bilayer keeps out
    • large molecules
    • h2o loving
    • charged molecules/atoms (ions)
  5. phospholipid bilayer lets through
    • h2o haters
    • small molecules
  6. types of proteins
    • facilitated diffusion
    • enzyme
    • active transport
    • hormone
    • attachment
    • ID
  7. structure of phospholipid
    proteins embedded in
  8. facilitated diffusion
    • high concentration of large polar molecules
    • change & make a channel that lets in large, polar, charged molecules
  9. enzyme
    changes molecule & results in chemical reaction
  10. active transport
    • can carry specific molecule into cell using energy
    • low concentration of small polar molecule
  11. hormone
    • protein in recpetor/attachment site
    • causes chemical change in cell
    • messengers: prostate gland in neurotransmitter
  12. attachment
    chemical attached to protein never detaches
  13. ID
    • macrophage touches & destroys if no ID
    • holder for cell ID
  14. phagocytosis
    • cell engulfs & brings in cells & particles
    • lysosome digests bacteria
  15. endocytosis
    engulfs & brings in molecules
  16. exocytosis
    brings out molecule
  17. osmosis
    water moves to balance concentration
  18. isomatic
    even concentration
  19. hypertonic
    water leaving particle
  20. hypotonic
    water entering particle

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