Question

What is cell membrane​

Answer 1

Answer:

The cell membrane is a biological membrane that sepretes interior of all cells from outside environment which protect the cell from its environment..

Explanation:

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Answer 2

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Cell membranes are composed primarily of fatty-acid-based lipids and proteins. Membrane lipids are principally of two types, phospholipids and sterols (generally cholesterol). ... They can also attach to the second type of protein, called the intrinsic proteins.