Cell Signaling Mechanisms Quiz
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Questions and Answers

Which type of signaling involves cells responding to local mediators that they themselves produce?

  • Endocrine signaling
  • Synaptic signaling
  • Autocrine signaling (correct)
  • Paracrine signaling
  • Which molecule quickly diffuses into neighboring cells?

  • cGMP
  • Sildenafil
  • Nitric Oxide (NO) (correct)
  • GPCRs
  • Which type of receptor is too large or too hydrophilic?

  • Intracellular receptors
  • G-protein-coupled receptors
  • Enzyme-coupled receptors
  • Ion-channel-coupled receptors (correct)
  • Which signaling involves broadcasting the signal by secreting it into the bloodstream?

    <p>Endocrine signaling</p> Signup and view all the answers

    What is the role of Gs protein in cell signaling?

    <p>Activate adenylyl cyclase</p> Signup and view all the answers

    Which cells release Nitric Oxide (NO) to allow muscle relaxation?

    <p>Endothelial cells</p> Signup and view all the answers

    Which family forms the largest family of cell-surface receptors?

    <p>(1/3 of all drugs work through GPCRs)</p> Signup and view all the answers

    What is the role of cGMP in cellular function?

    <p>(smooth muscle relaxing)</p> Signup and view all the answers

    Which type of signaling involves diffusion through the extracellular fluid locally?

    <p>Autocrine signaling</p> Signup and view all the answers

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