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
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC NDA-2 – 2022
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).