A student places beetroot cubes in sugar solutions 0M, 2M, 4M, 6M and 8M for 30mins. When the data was graphed, it appeared that there was no percent gain or loss in mass for the beetroot cube put in the 6M sugar solution.

a) Draw a graph showing the kind of curves the student must have obtained for each solution, to come to this conclusion.

b) Explain what is going on at the cellular level? Use appropriate terms (water potential and tonicity) in your explanation.