Question

If a cell is placed in an isotonic solution, which will occur?

• A. Salts will move into the cell from the surrounding solution
• B. Water will move into the cell from the surrounding solution
• C. Salts will move out of the cell into the surrounding solution
• D. Water will move into and out of the cell at equal rates

Answer 1

The correct option is D

Water will move into and out of the cell at equal rates

Isotonic means a solution with the same concentration as the cell. Hence water will move in and out of the cell at equal rates, so that the net movement of water is zero.