Receptor Types and Functions
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Questions and Answers

What is the primary function of nuclear receptors in cells?

  • To increase calcium concentration in the cytosol
  • To facilitate the release of neurotransmitters
  • To inhibit the activity of intracellular signalling pathways
  • To regulate gene expression and protein synthesis (correct)

    • What is the characteristic structure found in nuclear receptors?

  • Helix-loop-helix structure
  • Zinc finger structure (correct)
  • G-protein coupled receptor
  • Ligand-gated ion channel

    • Which type of receptor is activated by inositol triphosphate?

  • Steroid receptor
  • IP3 receptor (correct)
  • G-protein coupled receptor
  • Ryanodine receptor

    • Where are intracellular receptors commonly found?

    <p>Sarcoplasmic reticulum and endoplasmic reticulum</p> Signup and view all the answers

    What is the effect of ryanodine receptor activation?

    <p>Calcium-induced calcium release</p> Signup and view all the answers

    What is the main function of intracellular receptors?

    <p>To modulate intracellular signalling pathways</p> Signup and view all the answers

    Which type of receptor is involved in the regulation of protein synthesis?

    <p>Nuclear receptor</p> Signup and view all the answers

    What is the primary function of ligand-gated ion channels?

    <p>To allow ions to pass through the pore</p> Signup and view all the answers

    Which type of receptor has an extracellular ligand binding site and a pore for ions to pass through?

    <p>Ligand-gated ion channels</p> Signup and view all the answers

    What is the name of the receptor that has a clamshell/venus fly trap-like extracellular domain with ligand and allosteric binding sites?

    <p>Metabotropic glutamate receptor</p> Signup and view all the answers

    Which type of receptor is associated with pleiotropic effects?

    <p>Intrinsic enzyme receptors</p> Signup and view all the answers

    What is the name of the receptor that is activated by ATP and has a pore for ions to pass through?

    <p>P2X receptor</p> Signup and view all the answers

    How many transmembrane domains do rhodopsin-like receptors have?

    <p>7</p> Signup and view all the answers

    What is the name of the receptor that is activated by neurotransmitters and neurohormones?

    <p>G-protein coupled receptors</p> Signup and view all the answers

    What is the function of metabotropic glutamate receptors?

    <p>To activate second messengers</p> Signup and view all the answers

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