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9 Cards in this Set
- Front
- Back
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What is an amphipathic molecule?
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Molecule that contains both hydrophilic and hydrophobic groups
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What is the structure of a phosphoglyceride?
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Hydrophilic head - choline/serine/ethanolamine, phosphate, glycerol
Hydrophobic tail - fatty acid |
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What happens when heat is applied to the lipid bilayer of a membrane?
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Heat increases fluidity
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What is the effect of unsaturation on the lipid bilayer?
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Unsaturation increases fluidity
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What is the effect of the presence of cholesterol in the lipid bilayer?
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Cholesterol restricts fluidity near the surface of the bilayer and promotes fluidity at the centre
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What creates membrane asymmetry?
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Phosphatidylcholine on the outside, phosphatidylethanolamine on inside, gives curve to membrane
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What are 4 functions of membrane proteins?
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Transporters
Anchors Receptors Enzymes |
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What are integral proteins?
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Integral proteins have one or more parts embedded in the bilayer
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What are peripheral proteins?
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Peripheral proteins are attached to the membrane via interactions with integral proteins or lipid head groups
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