INTRODUCTION
CELL STRUCTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which part of a cell controls movement of substances in and out of the cell?
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Cell wall
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Ribosomes
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Nucleus
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Cell membrane
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Explanation:
Detailed explanation-1: -Plasma membrane controls the flow of substances in and out of cell.
Detailed explanation-2: -Diffusion, osmosis and active transport are three main ways that molecules and ions can move into and out of cells through the membrane.
Detailed explanation-3: -Substances move in and out of cells by diffusion down a concentration gradient, through a partially permeable membrane. The efficiency of movement of substances in and out of a cell is determined by its volume to surface area ratio.
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