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 (D)</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 (B)</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 (D)</p> Signup and view all the answers

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

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

Which drug antagonizes adrenaline on beta-adrenergic receptors?

<p>Propranolol (A)</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 (C)</p> Signup and view all the answers

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