Which of the following statements is true for a cell placed in beaker containing an isotonic solution?

Select one of the options below as your answer:

A. Water molecules flow from the cell into the beaker.

B. Water molecules flow from the beaker into the cell.

C. Water molecules flow in both directions at the same rate.

D. There is no movement of water molecules.

Respuesta :

An isotonic solution is that which has the same osmotic pressure in both sides of the semi - permiable membrane. This means that the net movement of the molecules (e.g. water) in and out of the cell is just the same. The answer to this item is therefore letter C.