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Biology LibreTexts

3: Membranes

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  • Thumbnail: The cell membrane, also called the plasma membrane or plasmalemma, is a semipermeable lipid bilayer common to all living cells. It contains a variety of biological molecules, primarily proteins and lipids, which are involved in a vast array of cellular processes. It also serves as the attachment point for both the intracellular cytoskeleton and, if present, the cell wall. Image used with permission (CC BU-SA 3.0; Dhatfield and LadyofHats).

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