The cell membrane (also known as the plasma membrane or cytoplasmic membrane) is a biological membrane that separates the interior of all cells from the outside environment. The cell membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells. The basic function of the cell membrane is to protect the cell from its surroundings. It consists of the phospholipid bilayer with embedded proteins. Cell membranes are involved in a variety of cellular processes such as cell adhesion, ion conductivity and cell signalling and serve as the attachment surface for several extracellular structures, including the cell wall, glycocalyx, and intracellular cytoskeleton. Cell membranes can be artificially reassembled.
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alpha anatomy background bilayer biology capsule cell cellular channel cholesterol cytoplasm cytoplasmic cytoskeleton diffusion eukaryotic flagellum glycolipid glycoprotein health helix human illustration integrative intracellular ion lipid lipids liquid macro medical medicine membrane microscopic mitochondria molecular molecule molecules nucleoid nycleus organ osmosis peripheral phospholipid phospholipids plasma prokaryote protein ribosomes science structure transport
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