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Question

A cell increases in volume if the external medium is

A
Hypotonic
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B
Hypertonic
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C
Isotonic
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D
None of the above
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Solution

The correct option is A Hypotonic
A cell increases in volume if the external medium is hypotonic because a hypotonic solution has more concentration of solvent molecules than the fluid inside the cell so the solvent molecules moves inside the cell from the region of higher concentration to the lower concentration by the process of endosmosis. The cell swells and increases in size.
So, the correct answer is option A.

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