The Dynamic Functions of the Plasma Membrane
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Questions and Answers

Which of the following is NOT a function of the plasma membrane?

  • Digestive (correct)
  • Selective Permeability
  • Insulating
  • Protective
  • What is the thickness range of the plasma membrane?

  • 150-200Å
  • 110-150Å
  • 75-110Å (correct)
  • 200-250Å
  • Which type of molecules can dissolve in the polar region of the plasma membrane and move rapidly across it?

  • Polar molecules like water
  • Non polar molecules like O2 (correct)
  • Ions
  • Glucose
  • What controls the free passage of ions in and out of the cell?

    <p>Presence of proteins in the membrane</p> Signup and view all the answers

    What is the insulating property of the plasma membrane compared to?

    <p>A charged condenser</p> Signup and view all the answers

    Which of the following is NOT a major component of the plasma membrane?

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

    What are the three major components of eukaryotic membranes?

    <p>Glycerophospholipids, sphingolipids, cholesterol</p> Signup and view all the answers

    Which part of the glycerophospholipids is in contact with the intra or extracellular aqueous phase?

    <p>Polar head groups</p> Signup and view all the answers

    Where are carbohydrates bound in the plasma membrane?

    <p>To both proteins and lipids</p> Signup and view all the answers

    Which leaflet of the plasma membrane do carbohydrates have a significant role in?

    <p>Outer leaflet</p> Signup and view all the answers

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