A cell containing a 3% sucrose solution is placed into a beaker containing a 7% sucrose solution. Assume the cell's membrane is permeable to water, but not permeable to the sucrose.
The water will diffuse from the 3 % sucrose solution to the 7 % sucrose solution until the two solutions are isotonic.
Explanation:
One definition of osmosis is that it is the movement water molecules from a region of higher water potential to a region of lower water potential through a partially permeable membrane. Water potential can be though of as the ability of molecules to move freely. They move more freely in 3 % sucrose solution because there are fewer solute particles. So water will diffuse from the 3 % sucrose solution to the 7 % sucrose solution until the two solutions are isotonic.
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