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Life 102 Chapter 7
ch 7
30
Biology
Undergraduate 1
09/26/2013
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Term
amphipathic
 Definition
has a hydrophilic region and a hydrophobic region
Term
fluid mosaic model
 Definition
the currently accepted cell membrane structure, envisions the membrane as mosaic of protein molecules drifting laterally in a fluid bilayer of phospholipids
Term
integral proteins...
 Definition
penetrate the hydrophobic interior of the lipid bilayer***
Term
peripheral proteins...
 Definition
not embedded in a lipid bilayer at all, they are apendages loosley bound to the surface of the membrane
Term
transport proteins
 Definition
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Term
glycolipids
 Definition
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Term
glycoproteins
 Definition
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Term
aquaporins
 Definition
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Term
diffusion
 Definition
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Term
concentration gradient
 Definition
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Term
passive transport
 Definition
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Term
osmosis
 Definition
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Term
tonicity
 Definition
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Term
isotonic
 Definition
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Term
hypertonic
 Definition
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Term
hypotonic
 Definition
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Term
osmoregulation
 Definition
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Term
turgid
 Definition
very firm
Term
flaccid
 Definition
limp
Term
plasmolysis
 Definition
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Term
ion channels
 Definition
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Term
gated channels
 Definition
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Term
active transport
 Definition
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Term
membrane potential
 Definition
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Term
sodium-potassium pump
 Definition
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Term
electrogenic pump
 Definition
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Term
proton pump
 Definition
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Term
cotransport
 Definition
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Term
exocytosis
 Definition
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Term
ligands
 Definition
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