Multiple choice

Which of the following is the best description of a semipermeable membrane in the context of osmosis?

  1. A membrane that allows neither solute nor solvent particles to pass through

  2. A membrane that allows solute particles, but not solvent particles, to pass

  3. A membrane that allows solvent particles, but not solute particles, to pass

  4. A membrane that allows both solute and solvent particles to pass through it
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In osmosis, a semipermeable membrane permits the free passage of solvent molecules, such as water, while restricting the movement of solute particles dissolved in the solution. This allows the solvent to move down its concentration gradient.

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