Pharmacology and Drug Interactions Quiz

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1. 1

   What effect does grapefruit juice have on drug metabolism?

   A It accelerates drug metabolism. B It inhibits drug metabolism. C It has no effect on drug metabolism.
2. 2

   What is an antagonist in pharmacology?

   A A compound that activates a receptor. B A compound that hastens drug absorption. C A compound that blocks or dampens a biological response.
3. 3

   Which route of administration bypasses the first-pass metabolism?

   A Intravenous B Oral C Rectal
4. 4

   Which drug interaction can lead to enhanced toxicity?

   A Synergistic interaction B Antagonistic interaction C Neutral interaction
5. 5

   What can the presence of an inducer do to a drug's half-life?

   A Decrease it B Increase it C No change
6. 6

   What is pharmacokinetics concerned with?

   A Drug-receptor interaction B The effect of the drug on the body C The movement of drugs within the body
7. 7

   How does the drug warfarin affect vitamin K?

   A It increases vitamin K synthesis. B It inhibits vitamin K action. C It displaces vitamin K from proteins.
8. 8

   What is the primary role of CYP enzymes in drug metabolism?

   A To oxidize drugs, making them more water-soluble. B To convert water-soluble drugs to fat-soluble. C To slow down drug elimination.
9. 9

   What impact does renal impairment have on drug clearance?

   A It typically increases drug clearance. B It typically decreases drug clearance. C It has no effect on drug clearance.
10. 10

    Which of the following can reduce the bioavailability of a drug?

    A Increase in gastric pH B Concurrent food intake C First-pass metabolism