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Bookmark or Share- Membrane | Definition, Structure, & Functions | Britannicamembrane, in biology, the thin layer that forms the outer boundary of a living cell or of an internal cell compartment. The outer boundary is the plasma membrane, and the compartments enclosed by internal membranes are called organelles.
- Cell membrane - WikipediaThe cell membrane (also known as the plasma membrane or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that separates and protects the interior of a cell from the outside environment (the extracellular space).
- Membrane - WikipediaBiological membranes include cell membranes (outer coverings of cells or organelles that allow passage of certain constituents); [2] nuclear membranes, which cover a cell nucleus; and tissue membranes, such as mucosae and serosae.
- The cell membrane review (article) | Khan AcademyMeaning. Cell membrane. Specialized structure that surrounds the cell and its internal environment; controls movement of substances into/out of cell. Hydrophobic. Molecule that repels water (“water-fearing”) Hydrophilic. Molecule that is attracted to water (“water-loving”) Amphipathic.
- Structure of the plasma membrane (article) | Khan AcademyThe principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrate groups that are attached to some of the lipids and proteins. A phospholipid is a lipid made of glycerol, two fatty acid tails, and a phosphate-linked head group.
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