Question

why did the number of water molecules on each side of the membrane change, whereas the number of sugar molecule stayed the same

Answer 1

Answer:

Isotonic solutions want an equal amount of molecules on both sides. So, the molecules pass in and out of the semi-permeable membrane in order to maintain a balance.

               Hope it helps u!!!

Answer 2

Answer:

Isotonic solutions want an equal amount of molecules on both sides. So, the molecules pass in and out of the semi-permeable membrane in order to maintain a balance