Which one of the following will be resulted when an animal cell is sur

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Which one of the following will be resulted when an animal cell is surrounded by a medium with lower concentration of water?

Cell will lose water
No change in movement of water
Cell will gain water
Cell will swell up
This question was previously asked in
UPSC NDA-2 – 2022
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The correct answer is Cell will lose water.
Osmosis is the movement of water across a semi-permeable membrane from a region of higher water potential (lower solute concentration) to a region of lower water potential (higher solute concentration). A medium with a “lower concentration of water” means it has a higher concentration of solutes compared to the cell’s cytoplasm; such a medium is hypertonic to the cell. Therefore, water will move by osmosis from inside the cell (higher water concentration) to the surrounding medium (lower water concentration).
If the medium had a *higher* concentration of water (lower solute concentration, hypotonic), the cell would gain water and swell. If the medium had the *same* concentration of water (isotonic), there would be no net movement of water. In a hypertonic solution, animal cells lose water and crenate (shrink).

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