Fill in the blanks by choosing the correct alternative from those given in brackets.
(a) When placed in a more concentrated solution, the cell contents will ............................. (shrink/ swell up)
(b) The pressure by which the ............................. molecules tend to cross the semi-permeable membrane is called osmotic pressure.(salt / water)
(c) Active transport is in a direction ............................. to that of diffusion. (opposite / same)
(a) shrink
(b) water
(c) opposite