MCQ Collection
Pharmacology MCQs
Practice Pharmacology questions with answers and explanations.
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Correct Answer: C. A drug that irreversibly suppresses the gastric hydrogen-potassium ATPase.
Explanation:
Proton-pump inhibitor is a drug that irreversibly suppresses the gastric hydrogen-potassium ATPase.
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Correct Answer: B. A competitive opioid receptor antagonist used to reverse opioid toxicity.
Explanation:
Naloxone is a competitive opioid receptor antagonist used to reverse opioid toxicity.
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Correct Answer: A. A muscarinic receptor antagonist that can increase heart rate and reduce secretions.
Explanation:
Atropine is a muscarinic receptor antagonist that can increase heart rate and reduce secretions.
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Correct Answer: A. An oral anticoagulant that inhibits vitamin-K dependent clotting factor synthesis.
Explanation:
Warfarin is an oral anticoagulant that inhibits vitamin-K dependent clotting factor synthesis.
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Correct Answer: D. A peptide hormone drug used to lower blood glucose and treat insulin deficiency.
Explanation:
Insulin is a peptide hormone drug used to lower blood glucose and treat insulin deficiency.
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Correct Answer: C. An antibiotic class associated with nephrotoxicity and ototoxicity.
Explanation:
Aminoglycoside is an antibiotic class associated with nephrotoxicity and ototoxicity.
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Correct Answer: B. A harmful and unintended response to a medicine used at normal doses.
Explanation:
Adverse drug reaction is a harmful and unintended response to a medicine used at normal doses.
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Correct Answer: A. A ligand that binds to a receptor and activates it to produce a biological response.
Explanation:
Agonist is a ligand that binds to a receptor and activates it to produce a biological response.
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Correct Answer: B. A reversible receptor blocker whose effect can be overcome by increasing agonist concentration.
Explanation:
Competitive antagonist is a reversible receptor blocker whose effect can be overcome by increasing agonist concentration.
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Correct Answer: B. A ligand that binds to a receptor and activates it to produce a biological response.
Explanation:
Agonist is a ligand that binds to a receptor and activates it to produce a biological response.
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Correct Answer: C. A reversible receptor blocker whose effect can be overcome by increasing agonist concentration.
Explanation:
Competitive antagonist is a reversible receptor blocker whose effect can be overcome by increasing agonist concentration.
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Correct Answer: C. Presystemic metabolism that reduces oral bioavailability before a drug reaches systemic circulation.
Explanation:
First-pass metabolism is presystemic metabolism that reduces oral bioavailability before a drug reaches systemic circulation.
