Cell Membrane Structure and Functions
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Questions and Answers

What is the primary function of the cell membrane in maintaining homeostasis?

  • To coordinate activity with other cells
  • To maintain the ionic gradient for electrical activity
  • To exchange nutrients and waste with the environment (correct)
  • To provide mechanical support to the cell

    • What is the purpose of the phospholipid bilayer in the cell membrane?

  • To coordinate activity with other cells
  • To provide mechanical support to the cell
  • To maintain the ionic gradient for electrical activity
  • To create a barrier to the passage of water and soluble substances (correct)

    • What is the role of cholesterol in the cell membrane?

  • To create a barrier to the passage of water
  • To provide mechanical support to the cell
  • To maintain the ionic gradient for electrical activity
  • To provide fluidity and stability to the membrane (correct)

    • What type of protein is covalently bonded to the cell membrane?

    <p>Integral protein</p> Signup and view all the answers

    What is the function of the cell membrane in relation to the environment?

    <p>To respond to changes in the environment</p> Signup and view all the answers

    What is the primary function of aquaporins in the cell membrane?

    <p>Facilitating the movement of water molecules</p> Signup and view all the answers

    What type of molecule can pass through ions channels in the cell membrane?

    <p>Specific ions</p> Signup and view all the answers

    What is the primary difference between aquaporins and ion channels?

    <p>The type of molecule they allow to pass through</p> Signup and view all the answers

    What is the common function of both aquaporins and ion channels?

    <p>Facilitating the movement of molecules across the cell membrane</p> Signup and view all the answers

    What is the general category of proteins that includes both aquaporins and ion channels?

    <p>Transport proteins</p> Signup and view all the answers

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