Which of the following structures controls the transport of the material into and out of living cells?
A
Centrosome
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B
Cell membrane
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C
Cell wall
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D
Ribosome
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Solution
The correct option is B Cell membrane A cell membrane is the characteristic feature of every living cell. It is selectively permeable and separates living protoplasm from the environment. It controls the entry of materials coming into and moving out of the cell. it only permits certain molecules to enter or leave the cell so as to maintain the required dynamic environment within the cell.