Major Receptor Families Quiz
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Questions and Answers

Which receptor family is responsible for the regulation of the flow of ions across the cell membrane?

  • G protein-coupled receptors
  • Enzyme-linked receptors
  • Ligand-gated ion channels (correct)
  • Intracellular receptors
  • What is the characteristic duration of response to stimulation of enzyme-linked receptors?

  • Milliseconds
  • Seconds
  • Minutes to hours (correct)
  • Days
  • Which receptor family comprises a single helical peptide with seven membrane-spanning regions?

  • Intracellular receptors
  • Enzyme-linked receptors
  • G protein-coupled receptors (correct)
  • Ligand-gated ion channels
  • How does the duration of response to ligand-gated ion channels compare to that of intracellular receptors?

    <p>Ligand-gated ion channels last for milliseconds while intracellular receptors last for minutes to hours</p> Signup and view all the answers

    Which receptor family requires the ligand to diffuse into the cell for interaction?

    <p>Intracellular receptors</p> Signup and view all the answers

    As drug concentration increases, what happens to its pharmacologic effect according to the graded dose-response relationship?

    <p>The effect increases</p> Signup and view all the answers

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