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General Pharmacology

Drug Absorption Practice Questions

20 free Drug Absorption practice questions for the Pharmacology, each with the correct answer and a detailed explanation. Open any question below, or take the full set as an interactive quiz.

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All Drug Absorption questions

20 questions
  1. Q1. Which transport mechanism is characterized by moving a drug against its concentration gradient and requires the expenditure of cellular energy (ATP)?
  2. Q2. The Henderson-Hasselbalch equation is clinically useful for predicting which aspect of drug absorption?
  3. Q3. What is the primary site of absorption for most orally administered drugs due to its extensive surface area and high vascularity?
  4. Q4. Which of the following describes 'First-Pass Metabolism'?
  5. Q5. A drug with a high 'Bioavailability' (F value) of 0.9 suggests that:
  6. Q6. How does the ionization of a weak acid drug (e.g., Aspirin) change in an alkaline environment like the small intestine?
  7. Q7. Which factor is most likely to delay the absorption of a drug that is primarily absorbed in the upper small intestine?
  8. Q8. Which route of administration is subject to the highest degree of first-pass metabolism?
  9. Q9. The 'P-glycoprotein' (P-gp) transporter in the enterocytes of the GI tract primarily functions to:
  10. Q10. Which pharmaceutical formulation is designed to release the drug in the small intestine rather than the stomach to protect the gastric mucosa?
  11. Q11. What is the primary reason that insulin is administered parenterally (injection) rather than orally?
  12. Q12. In drug absorption, 'Facilitated Diffusion' differs from 'Simple Diffusion' because it:
  13. Q13. Which physiological change would likely increase the absorption of a transdermal patch medication?
  14. Q14. The term 'Bioequivalence' between two drug products means they have:
  15. Q15. Absorption via the sublingual route is advantageous for drugs like Nitroglycerin because:
  16. Q16. Which of the following describes the 'pH Partition Hypothesis'?
  17. Q17. What effect does 'ion trapping' have on a basic drug in the stomach (pH 1.5)?
  18. Q18. Which property is most desirable for a drug to be absorbed via passive diffusion across the lipid bilayer of a cell membrane?
  19. Q19. The Area Under the Curve (AUC) in a plasma concentration-time graph represents:
  20. Q20. Which route of administration provides 100% bioavailability by definition?