๐Ÿงฌap biology review

Plasma Membranes

Written by the Fiveable Content Team โ€ข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโ€ขWritten by the Fiveable Content Team โ€ข Last updated September 2025

Definition

A plasma membrane is a thin, flexible barrier that surrounds all cells and separates the cell's interior from its external environment. It controls what enters and leaves the cell.

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