A 10% glucose solution is placed in the thistle tube. The thistle tube is placed in a beaker that contains a 5% glucose solution. There is a differentially permeable membrane across the broad end of the tube, which is permeable to water but not to the sugar glucose. As diffusion occurs
A) the 10% solution will become more concentrated and the 5% solution will become less concentrated.
B) both solutions will become more concentrated.
C) the 10% solution will become less concentrated and the 5% solution will become more concentrated.
D) both solutions will become less concentrated.

Question

A 10% glucose solution is placed in the thistle tube. The thistle tube is placed in a beaker that contains a 5% glucose solution. There is a differentially permeable membrane across the broad end of the tube, which is permeable to water but not to the sugar glucose. As diffusion occurs 
A) the 10% solution will become more concentrated and the 5% solution will become less concentrated. 
B) both solutions will become more concentrated. 
C) the 10% solution will become less concentrated and the 5% solution will become more concentrated. 
D) both solutions will become less concentrated.

Quizplus · Accepted Answer

Water will move from the 5% solution to the 10% solution due to osmosis. This means that the 10% solution will become more dilute (less concentrated) and the 5% solution will become more concentrated. Therefore, the correct answer is C).

A 10% Glucose Solution Is Placed in the Thistle Tube