Cell Membranes and Internal Cell Organization Quiz
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Questions and Answers

What is the main function of the plasma membrane?

  • Producing cytosol
  • Enclosing the intracellular environment of the cell (correct)
  • Regulating gene expression
  • Synthesizing ATP

    • What do the lipid molecules in the plasma membrane form?

  • A single layer permeable barrier
  • A triple layer selective barrier
  • A double layer impermeable barrier (correct)
  • An irregular layer impermeable to lipids

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

  • Regulating gene expression
  • Structural support only
  • Mediating nearly all of the functions of the membrane (correct)
  • Serving as energy storage

    • What percentage of the human genome encodes for membrane proteins alone?

    <p>30%</p> Signup and view all the answers

    What provides the basic structure of the cell membrane?

    <p>Lipid bilayer</p> Signup and view all the answers

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