Term
| Fluidity of Unsaturated Fatty Acids |
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Definition
| On phospholipid tails; more fluid |
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Term
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Definition
High temp = Less fluid
Low Temp = More fluid |
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Term
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Definition
lateral movement (frequent)
Flip-flop (rare) |
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Term
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Definition
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Term
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Definition
| Span the length of the membrane |
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Term
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Definition
| On one side of the membrane |
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Term
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Definition
Semi-permeable.
Permeable to: small, hydrophobic substances (02, C02)
Not permeable to: Large, hydrophillic (glucose, H20, Na+) |
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Term
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Definition
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Term
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Definition
| movement of a substance from an area of high to low concentration (down concentration gradient) until equillibrium is reached |
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Term
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Definition
Diffusion of H20 across a semi-permeable membrane
*Dependent on solute in water that cannot permeate the membrane |
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Term
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Definition
Low Solute -----------> High Solute
High H2O Water moves high to low Low H2O
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Term
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Definition
| Passive diffusion facilitated by transport proteins |
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Term
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Definition
Transport from low to high concentration (against concentration gradient)
Energy Input REQUIRED
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Term
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Definition
Transport proteins that generate a voltage across the membrane
Energy required
ex: Na+ K+ pump, H+ (proton) pump, |
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Term
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Definition
Voltage diferent across a membrane
Based on establishment of electrochemical gradient |
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Term
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Definition
| Concentration gradient (high concentration of substance, low concentration on the other side of membrane) |
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Term
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Definition
| Electrical gradient (charge different due to ionic species) |
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Term
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Definition
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Term
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Definition
non-specific
Cell engulfs |
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Term
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Definition
non-specific
Cell drinks (WTF?) |
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Term
| Receptor Mediated Endocytosis |
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Definition
Specific
Binding of specific molecule to membrane receptor triggers endocytosis into protein coated vesicle
*bulk transport |
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Term
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Definition
| Substances OUT of the cell |
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