what is the cell membrane
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The cell membrane is a biological membrane that separates the interior of all cells from the outside environment which protects the cell from its environment. The cell membrane consists of a lipid bilayer, including cholesterols that sit between phospholipids to maintain their fluidity at various temperatures. Wikipedia
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The cell membrane is a thin layer that holds the cell together. It is porous and semi-permiable in nature. It selectively allows the movement of substances into and out of the cell. It also gives shape to the cell.
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