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Plasma Membrane

AQA AS-level BiologyTransport Across Cell MembranesLesson 1 of 22

All living cells are enclosed by a plasma membrane which is made of a phospholipid bilayer.

Diagram

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Key terms in this lesson

phospholipid
A lipid in which one fatty acid is replaced by a phosphate group, giving a hydrophilic head and hydrophobic tails.

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