Solutions and Osmosis Quiz
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Questions and Answers

What is osmolality a measure of?

  • The ability of a solution to change the shape or tone of cells
  • The number of solute particles dissolved in 1 liter of water (correct)
  • The diffusion of a solvent through a selectively permeable membrane
  • The total concentration of all solute particles in a solution
  • In which type of mixture does osmosis occur?

  • Heterogeneous mixture
  • Unsaturated mixture
  • Saturated mixture
  • Homogeneous mixture (correct)
  • What is the normal osmolality of blood plasma?

  • 300 mOsm/l (correct)
  • ≈ 330 mOsm/l
  • 1000 mOsm/l
  • 500 mOsm/l
  • What does tonicity refer to?

    <p>The ability of a solution to change the shape or tone of cells</p> Signup and view all the answers

    What is the main characteristic of a selectively permeable membrane in osmosis?

    <p>Allows the diffusion of a solvent</p> Signup and view all the answers

    What is the main difference between osmolarity and osmolality?

    <p>Osmolarity measures total solute particles in a solution, while osmolality measures solute particles in 1 liter of water</p> Signup and view all the answers

    What is the normal osmolality of blood plasma?

    <p>300 mOsm/l</p> Signup and view all the answers

    In osmosis, when does it occur?

    <p>When the water concentration differs on both sides of a membrane</p> Signup and view all the answers

    What is the measure of osmolality in biological systems?

    <p>Milliosmoles (mOsm)</p> Signup and view all the answers

    What does tonicity refer to?

    <p>The ability of a solution to change the shape or tone of cells</p> Signup and view all the answers

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