Diffusion and Osmosis - Review

10. In a osmotic gradient, the side which is Hypotonic is the side which will _________ (gain/lose/equalize) solute molecules with respect to the Hypertonic side.

The porous panel in the middle represents the membrane. Solutions capable of passing through the membrane are driven by collisions between them. If the solution on one side of the membrane contains fewer "A" or "B" molecules then it is considered hypotonic (under diluted) with more water and fewer molecules. If the solution on one side of the membrane contains more "A" or "B" molecules then it is consider hypertonic (over diluted) with less water and more diluting molecules. The hypotonic side will always lose its water molecules and hypertonic side will always gain water molecules.