Question

Red blood cells that are bathed in blood neither shrink nor swell and burst. If the concentration of blood is 0.5 M, what could be the concentration of cytoplasm of RBCs

Answer 1

Cells neither shrink nor burst when they are placed a solution of the same concentration as the concentration of the cytoplasm. The rate at which water diffuses into the cell is the same as the rate at which water diffuses out of the cell - so the total volume of water inside and outside the cell stays the same.