plz give the definition of plasma membrane
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Definition of plasma membrane. : a semipermeable limiting layer of cell protoplasm consisting of a fluid phospholipid bilayer with intercalated proteins. — called also cell membrane.
The plasma membrane, also called the cell membrane, is the membrane found in all cells that separates the interior of the cell from the outside environment. In bacterial and plant cells, a cell wall is attached to the plasma membrane on its outside surface. The plasma membrane consists of a lipid bilayer that is semipermeable. The plasma membrane regulates the transport of materials entering and exiting the cell.The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell.