Solution 1 has two solutes (A and B) and an osmotic pressure of 250 mOsm.Solution 2 has only one solute (C) and an osmotic pressure of 300 mOsm.If a membrane between these solutions is permeable to only water and B, then
A)Solution 1 will gain water from solution 2.
B)Solution 2 will gain water from solution 1.
C)Some of solute C will move into solution 1.
D)Solution 1 has a higher osmotic pressure.
E)Solution 1 would be hypertonic to a human cell.

Question

Quizplus · Accepted Answer

Since the membrane is permeable to only water and B, only these molecules will move. Solvent (water) will move from the side of higher water potential (solution 2) to the side of lower water potential (solution 1) until the osmotic pressure on both sides is equal. This means that solution 1 will gain water from solution 2. Since B is also able to cross the membrane, it will also move from solution 1 to solution 2, but this will not significantly affect the overall movement of water. The osmotic pressure difference between the solutions is not significant enough to cause the movement of any solute molecules. Solution 2 has a higher osmotic pressure, which means it has a higher concentration of solute particles, but this does not affect the direction of water movement. Finally, it is not possible to determine whether solution 1 would be hypertonic to a human cell without knowing the osmotic pressure of the human cell.

Solution 1 Has Two Solutes (A and B) and an Osmotic