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Cell membranes, also known as plasma membranes, serve as protective barriers that enclose the contents of a cell, maintaining its internal environment. They regulate the movement of substances in and out of the cell, facilitating communication and signaling with other cells. Composed of a lipid bilayer with embedded proteins, cell membranes also play a crucial role in cell recognition and adhesion. Additionally, they help maintain the cell's shape and contribute to various cellular functions.

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4w ago

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