Understanding Agonists in Pharmacology Quiz
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Questions and Answers

What is a full agonist?

  • Drug with high affinity to a receptor and low efficacy
  • Drug with high affinity to a receptor and high efficacy (correct)
  • Drug with low affinity to a receptor and high efficacy
  • Drug with moderate affinity to a receptor and moderate efficacy

    • What characterizes a partial agonist?

  • Low efficacy and slow rate of association and dissociation with the receptor
  • High efficacy and rapid rate of association and dissociation with the receptor
  • High affinity and weak association with the receptor
  • Weak efficacy and moderate association and dissociation with the receptor (correct)

    • Which drug acts as an antagonist in the presence of a full agonist?

  • Phenylephrine
  • Adrenaline
  • Morphine
  • Nalorphine (correct)

    • Which drug is an example of a full agonist?

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

    What type of antagonist competes with the agonist for the same receptor site?

    <p>Reversible or Competitive antagonist</p> Signup and view all the answers

    Which type of antagonist binds irreversibly to the receptor site or to another site?

    <p>Non-competitive or allosteric antagonist</p> Signup and view all the answers

    What effect does a competitive antagonist have on the potency of the agonist?

    <p>Decreases the potency</p> Signup and view all the answers

    Which drug antagonizes adrenaline on beta-adrenergic receptors?

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

    What type of shift does a non-competitive antagonist cause in the dose-response curve?

    <p>Non-parallel shift to the right</p> Signup and view all the answers

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