An isotonic solution
A)has a greater concentration of impermeant solute than a cell.
B)has more water entering than leaving a cell.
C)has the same osmotic pressure as the cells in the solution.
D)causes a cell to shrink.

Question

Quizplus · Accepted Answer

An isotonic solution has the same osmotic pressure as the cells in the solution. This means that the concentration of solute inside and outside of the cell is equal and there is no net movement of water, so the cell remains the same size. Option A is incorrect as an isotonic solution has equal solute concentration. Option B is incorrect as an isotonic solution has an equal amount of water entering and leaving the cell. Option D is incorrect as the cell would remain the same size in an isotonic solution.

An Isotonic Solution