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Movement of Membranes
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phospholipid bilayer
allows fat to enter
top of phospholipid
polar, hydrophillic (h2o loving)
barrier
: most things in cell is h20 loving
bottom of phospholipid bilayer
nonpolar, hydrophobic (h2o hating)
stabalizer
phospholipid bilayer keeps out
large molecules
h2o loving
charged molecules/atoms (ions)
phospholipid bilayer lets through
h2o haters
small molecules
types of proteins
facilitated diffusion
enzyme
active transport
hormone
attachment
ID
structure of phospholipid
proteins embedded in
facilitated diffusion
high concentration of large polar molecules
change & make a channel that lets in large, polar, charged molecules
enzyme
changes
molecule & results in chemical reaction
active transport
can carry specific molecule into cell using energy
low concentration of small polar molecule
hormone
protein in recpetor/attachment site
causes chemical change in cell
messengers
: prostate gland in neurotransmitter
attachment
chemical attached to protein never detaches
ID
macrophage touches & destroys if no ID
holder for cell ID
phagocytosis
cell engulfs & brings in cells & particles
lysosome digests bacteria
endocytosis
engulfs & brings in molecules
exocytosis
brings out molecule
osmosis
water moves to balance concentration
isomatic
even concentration
hypertonic
water leaving particle
hypotonic
water entering particle
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Author
ht2lvu
ID
46955
Card Set
Movement of Membranes
Description
Proteins & Membranes
Updated
2010-11-03T05:51:24Z
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