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A cell's membrane is composed of two layers of lipid molecules. What is the main function of a cell membrane?

A.

construct long chains of amino acids

B.

control what enters and exits the cell

C.

store energy for later use

D.

direct the functions of the cell's organelles


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the answer to whats the main funtion of a cell membrane is b
shewasrich

Answer: b. to control what enters and exits the cell

The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.

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