Question

Algal cells are placed in an isotonic solution. Additional amounts of solutes are slowly added to the solution. What happens to the cells?
Question 7 options:

They will begin to swell.

They will burst.

They will stay the same.

They will shrink.

Answer 1

Answer:

The correct option is D) They will shrink.

Explanation:

An isotonic solution can be described as a solution that has a balance of solutes and solvents inside and outside a cell. As a result, no concentration gradient is developed. Hence, there is no transfer of solutes or solvents in an isotonic solution.

But when solutes will be added into the solution a concentration gradient will develop. There will be more molecules of solutes outside the cell as compared to the inside of the cell. As result, the solvent will move outside the cell to maintain a balance. Hence, the cells will shrink.