Question

A dialysis sac that is permeable to glucose and water is filled with water and placed...

A dialysis sac that is permeable to glucose and water is filled with water and placed in a beaker containing 20% glucose solution. Will there be a net transport of water across the dialysis sac? If so, in which direction will the water move, into the sac or out of the sac?

No, there is no force to drive the water across the membrane.
There is no net movement, but water will move back and forth across the membrane.
Yes, water will move out of the sac.
Yes, water will move into the sac.

Homework Answers

Answer #1

Answer : Yes water will move into the sac.

Reason : In given scenario, the available membrane is permeable to both the glucose and the water. Here the sac containing only water and it is placed in solution that is more concentrated than the sac, because the beaker solution is filled with some amount of glucose. By placing the sac, there will be a diffusion a passive movement occurs and both the molecules get transported into the sac. Therefore the above mentioned option would be the appropriate one.

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