Since the final heights and volumes are the same, it means that the concentrations of solutes in both solutions are equal. This is an indication that the solution is isotonic. In an isotonic solution, the concentration of solutes is the same inside and outside of a cell, and there is no net movement of water molecules across the cell membrane. This also means that the osmotic pressure inside and outside the cell is the same, resulting in no change in the cell's volume. rewrite