Membrane Transport and Body Fluids Quiz
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Questions and Answers

Which type of molecules can cross cell membranes through passive diffusion?

  • Large molecules
  • Water-soluble molecules
  • Charged molecules
  • Lipid-soluble molecules (correct)

    • What is the role of aquaporins in membrane transport?

  • They form aqueous pores in the lipid bilayer (correct)
  • They require energy for transport
  • They facilitate facilitated diffusion
  • They bind to drug molecules

    • What is required for aqueous diffusion to occur through a channel?

  • A concentration gradient (correct)
  • Hydration shell
  • A lipid bilayer
  • Energy

    • Which type of molecules cannot cross the lipid bilayer through aqueous diffusion?

    <p>Charged molecules</p> Signup and view all the answers

    What is the role of specialized carrier proteins in facilitated diffusion?

    <p>They change conformation and release solute on the other side of the membrane</p> Signup and view all the answers

    Which of the following is a way in which small molecules can cross cell membranes?

    <p>Aqueous diffusion through aqueous pores formed by aquaporins</p> Signup and view all the answers

    Which type of molecules can cross cell membranes through passive diffusion?

    <p>Lipid-soluble molecules</p> Signup and view all the answers

    What is the role of hydration shell in membrane transport?

    <p>To prevent passive diffusion</p> Signup and view all the answers

    Which of the following is required for facilitated diffusion to occur?

    <p>Concentration gradient</p> Signup and view all the answers

    What is the role of aquaporins in membrane transport?

    <p>To facilitate passive diffusion</p> Signup and view all the answers

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