Two solutions are separated by a selectively permeable membrane. On side A, there is a solution composed of 20% protein and 80% water. On side B, the solution is 100% water. As osmosis occurs, what will happen to the solution on side A?
A) It will become less concentrated since protein will move from A to B.
B) It will become more concentrated since water passes from B to A.
C) It will become more concentrated since water passes from A to B.
D) It will become less concentrated since water passes from B to A.
E) It will become more concentrated since protein will move from B to A.

Question

Quizplus · Accepted Answer

Water will move from side B, which has a higher water concentration, to side A, which has a lower water concentration. This will cause the solution on side A to become less concentrated as it gains more water. Therefore, the correct answer is D. None of the other options explain the effect of osmosis on the protein and water concentrations in the solutions.

Two Solutions Are Separated by a Selectively Permeable Membrane