Plasma Membrane Structure & Function
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What is the plasma membrane made of?
A phospholipid bilayer with embedded proteins.
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What is a phospholipid?
A molecule with a hydrophilic head and hydrophobic fatty acid tails
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Which part of a phospholipid faces water?
Hydrophilic head.
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Which part of a phospholipid avoids water?
Hydrophobic tails.
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What is the role of membrane proteins?
Transport substances and act as receptors.
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What is the role of cholesterol in the membrane?
Maintains membrane fluidity.
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Why is the plasma membrane described as semipermeable?
It allows some substances to pass through but not others.
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