Cell Membrane Structure and Transport Quiz
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Questions and Answers

Which of the following best describes the composition of a cell membrane?

  • Primarily composed of nucleic acids
  • Primarily composed of phospholipids (correct)
  • Primarily composed of carbohydrates
  • Primarily composed of proteins

    • What is the main function of the hydrophobic interior of the cell membrane?

  • To facilitate transport of ions
  • To regulate cell division
  • To allow passage of water-soluble substances
  • To prevent passage of water-soluble substances (correct)

    • What is the term used to describe the movement of water across a cell membrane?

  • Facilitated diffusion
  • Active transport
  • Diffusion
  • Osmosis (correct)

    • What is the main difference between active transport and facilitated diffusion?

    <p>Active transport requires energy, while facilitated diffusion does not</p> Signup and view all the answers

    Which of the following is NOT a factor affecting the rate of diffusion?

    <p>Cellular respiration</p> Signup and view all the answers

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