Plasma Membrane and Transport Mechanisms Quiz
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Questions and Answers

What is the main component of the plasma membrane?

  • Cholesterol
  • Glycoprotein
  • Phospholipid (correct)
  • Steroid

    • Why is the plasma membrane referred to as semi-permeable?

  • It only permits water molecules to pass through
  • It allows all substances to freely pass through
  • It regulates the substances entering and exiting the cell (correct)
  • It is impermeable to all substances

    • What model is used to represent the plasma membrane?

  • Rigid structure model
  • Fluid mosaic model (correct)
  • Random arrangement model
  • Static layer model

    • What characteristic defines amphipathic molecules?

    <p>Having both hydrophilic and hydrophobic regions</p> Signup and view all the answers

    Why are the embedded macromolecules in the plasma membrane able to move regularly?

    <p>The membrane is fluid</p> Signup and view all the answers

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