Ligand-Gated Ion Channels and Neurotransmission
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Questions and Answers

What type of proteins are ligand-gated ion channels?

  • Lipid-anchored proteins
  • Peripheral membrane proteins
  • Integral membrane proteins (correct)
  • Transmembrane proteins
  • What drives the flow of ions across the plasma membrane in ligand-gated ion channels?

  • Active transport
  • Osmosis
  • Facilitated diffusion
  • Passive transport driven by the electrochemical gradient (correct)
  • What happens to the channel when the ligand binds to the receptor?

  • The channel opens (correct)
  • The channel closes
  • The channel becomes partially open
  • The channel remains the same
  • What is an example of a ligand that binds to a receptor and opens an ion channel?

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

    What happens to the channel when the ligand leaves the receptor?

    <p>The channel closes</p> Signup and view all the answers

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