Question

A cell will swell up if

(a) The concentration of water molecules in the cell is higher than the
concentration of water molecules in surrounding medium
(b) The concentration of water molecules in surrounding medium is higher
than water molecules concentration in the cell
(c) The concentration of water molecules is same in the cell and in the
surrounding medium
(d) Concentration of water molecules does not matter

Answer 1

Answer:

b is the right answer of this question

Answer 2

The right response to this question is option b.

• A cell will swell up when the water moves inside the cell from the outside environment. This happens through the process of osmosis.
• The movement of water molecules is due to differences in concentration gradient on two sides.
• Water molecules move from the side where concentration is high to the concentration is low.
• In a hypotonic solution, water concentration is higher than its concentration in cells therefore, it will move inward.
• On moving inside the cells, the cells will swell up and the phenomenon is called endosmosis.
• Option a is incorrect because the process described is the opposite.
• Option c is incorrect because for the movement of water molecules concentration gradient is necessary.
• Option d is wrong because concentration is important in this case.
• Hence, if the concentration of water is higher in the medium than in cells, cells will swell up.

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