Plasma Membrane Structure and Components Quiz
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Questions and Answers

The main function of the plasma membrane is to:

  • Facilitate the exchange of genetic material between cells
  • Maintain the internal pH of the cell
  • Regulate the synthesis of proteins within the cell
  • Separate the living cell from their non-living surroundings (correct)

    • What is the primary role of glycoproteins in the plasma membrane?

  • Maintain the fluidity of the cell surface membrane
  • Provide support and shape to the cell
  • Facilitate the transport of molecules across the membrane
  • Assist in cell recognition and act as receptors and antigens (correct)

    • Which component in the plasma membrane allows only certain substances to diffuse through?

  • Glycoproteins
  • Cholesterol
  • Phospholipid bilayer (correct)
  • Glycolipids

    • What is the role of transport proteins in the plasma membrane?

    <p>Help in transporting molecules across cell membranes through facilitated diffusion</p> Signup and view all the answers

    What is the amphipathic nature of the plasma membrane associated with?

    <p>Containing both hydrophilic heads and hydrophobic tails</p> Signup and view all the answers

    Which component in the plasma membrane helps maintain the fluidity of the cell surface membrane?

    <p>Cholesterol</p> Signup and view all the answers

    What is the main role of cell membrane receptor proteins in the plasma membrane?

    <p>Help in communication of a cell with their external environment with the help of hormones, neurotransmitters, and other signaling molecules</p> Signup and view all the answers

    What is the role of glycolipids in the plasma membrane?

    <p>Attached to phospholipids along with sugar chains</p> Signup and view all the answers

    What is the primary function of glycolipids in the plasma membrane?

    <p>Act as receptors and antigens for cell recognition</p> Signup and view all the answers

    How do transport proteins in the plasma membrane facilitate the movement of molecules?

    <p>Through facilitated diffusion</p> Signup and view all the answers

    What is the role of cholesterol in the plasma membrane?

    <p>To maintain the fluidity of the cell surface membrane</p> Signup and view all the answers

    What is the main function of the phospholipid bilayer in the plasma membrane?

    <p>To allow only certain substances to diffuse through the membrane</p> Signup and view all the answers

    What is the primary role of cell membrane receptor proteins in the plasma membrane?

    <p>To help in communication of a cell with their external environment</p> Signup and view all the answers

    Why are glycoproteins important in the plasma membrane?

    <p>To help in communication of a cell with their external environment</p> Signup and view all the answers

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