what is cell and cell membrane
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Cell: the cell is a basic structural, functional, biological unit of all known organisms. A cell is smallest unit of life. Cells consist of cytoplasm enclosed with in a membrane, which contains many biomolecules such as protein and nucleic acid.
Cell membrane: The thin membrane that forms the outer surface of the protoplasm of a cell and regulates the passage of materials in and out of the cell. It is made up of proteins and lipids and often contains molecular receptors.
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