Question

what will happen if Rasins are kept in water. (b) rbcs are kept in 10%glucose solution (c) rbcs are kept in 0.9%salt solution or 0.5% glucose solution

Answer 1

a) When raisins are kept in water, they swell due to osmotic pressure
b) When rbcs are kept in 10% glucose solution they shrink because the glucose solution is hypertonic for it.
c) it will be similar to (b) but will b less shrinked because the concentration here is less than that of (b)

Answer 2

When raisins are kept they gets swollen up due to endosmosis
When rbcs are kept in 10%glucose solution as the concentration of sugar is higher at the outer atmosphere of rbc it will gain sugar inside and loss water
When rbcs are kept in 0.9%salt solution will not change because there neither gain nor lose water(isotonic)
Hope it helps..