2026 UPDATED QUESTIONS DOWNLOAD
[PASS GUARANTEED] WGU D116 ADVANCED
PHARMACOLOGY FINAL EXAM | 350+ Q&A
COVERING PHARMACOKINETICS, ANTIBIOTICS,
CARDIAC, ENDOCRINE & PSYCH MEDS
1. The therapeutic index is best defined as:
A. Difference between maximum and minimum dose
B. Ratio of toxic dose (TD50) to effective dose (ED50)
C. The half-life of a drug
D. Drug potency
Answer: B. Ratio of toxic dose (TD50) to effective dose (ED50)
Rationale: A high therapeutic index indicates a wide safety margin between effective and toxic
doses.
2. Which route of administration bypasses first-pass metabolism?
A. Oral
B. Rectal
C. Sublingual
D. Intraduodenal
Answer: C. Sublingual
Rationale: Sublingual administration allows direct absorption into systemic circulation.
3. A drug that binds to a receptor and produces maximal effect is called:
A. Partial agonist
B. Competitive antagonist
C. Full agonist
D. Inverse agonist
Answer: C. Full agonist
Rationale: Full agonists produce the highest possible effect when bound.
,2026 UPDATED QUESTIONS DOWNLOAD
4. Phase I drug metabolism primarily involves:
A. Conjugation
B. Oxidation, reduction, hydrolysis
C. Excretion unchanged
D. Renal filtration
Answer: B. Oxidation, reduction, hydrolysis
Rationale: Phase I reactions modify the drug to increase polarity.
5. A competitive antagonist:
A. Irreversibly inhibits receptor
B. Binds permanently
C. Competes with agonist at same binding site
D. Enhances agonist effect
Answer: C. Competes with agonist at same binding site
Rationale: Competitive antagonists can be displaced by increased agonist concentration.
6. What is the half-life of a drug?
A. Time to reach maximum concentration
B. Time for plasma concentration to decrease by 50%
C. Time between doses
D. Time to eliminate drug completely
Answer: B. Time for plasma concentration to decrease by 50%
Rationale: Half-life determines dosing interval and steady state.
7. Which organ plays the largest role in drug metabolism?
A. Kidney
B. Liver
C. Lung
D. Spleen
,2026 UPDATED QUESTIONS DOWNLOAD
Answer: B. Liver
Rationale: Hepatic enzymes metabolize most drugs.
8. A prodrug requires:
A. No metabolism
B. Activation by metabolism
C. Excretion unchanged
D. Only renal elimination
Answer: B. Activation by metabolism
Rationale: Prodrugs become active after biotransformation.
9. A major adverse effect of ACE inhibitors is:
A. Bradycardia
B. Cough
C. Hyperglycemia
D. Sedation
Answer: B. Cough
Rationale: Increased bradykinin from ACE inhibition often causes cough.
10. Warfarin’s effect is monitored by:
A. aPTT
B. PT/INR
C. Blood glucose
D. Platelet count
Answer: B. PT/INR
Rationale: PT/INR reflects extrinsic pathway anticoagulation.
11. A drug that inhibits CYP450 enzymes can:
A. Decrease levels of substrate drugs
B. Increase plasma levels of substrate drugs
, 2026 UPDATED QUESTIONS DOWNLOAD
C. Increase renal clearance
D. Have no interaction
Answer: B. Increase plasma levels of substrate drugs
Rationale: Inhibition reduces metabolism, raising substrate drug concentration.
12. The loading dose is given to:
A. Delay onset
B. Achieve therapeutic concentration quickly
C. Prevent side effects
D. Taper off drug
Answer: B. Achieve therapeutic concentration quickly
Rationale: Loading doses expedite reaching steady state for certain drugs.
13. A partial agonist has:
A. No effect
B. Less maximal effect than full agonist
C. Greater effect than full agonist
D. Only antagonist properties
Answer: B. Less maximal effect than full agonist
Rationale: Partial agonists bind receptors but produce submaximal response.
14. Kidney elimination primarily involves:
A. Metabolism
B. Filtration, secretion, reabsorption
C. Only filtration
D. Only exhalation
Answer: B. Filtration, secretion, reabsorption
Rationale: All three nephron processes influence renal elimination.
15. A drug with low bioavailability likely has:
[PASS GUARANTEED] WGU D116 ADVANCED
PHARMACOLOGY FINAL EXAM | 350+ Q&A
COVERING PHARMACOKINETICS, ANTIBIOTICS,
CARDIAC, ENDOCRINE & PSYCH MEDS
1. The therapeutic index is best defined as:
A. Difference between maximum and minimum dose
B. Ratio of toxic dose (TD50) to effective dose (ED50)
C. The half-life of a drug
D. Drug potency
Answer: B. Ratio of toxic dose (TD50) to effective dose (ED50)
Rationale: A high therapeutic index indicates a wide safety margin between effective and toxic
doses.
2. Which route of administration bypasses first-pass metabolism?
A. Oral
B. Rectal
C. Sublingual
D. Intraduodenal
Answer: C. Sublingual
Rationale: Sublingual administration allows direct absorption into systemic circulation.
3. A drug that binds to a receptor and produces maximal effect is called:
A. Partial agonist
B. Competitive antagonist
C. Full agonist
D. Inverse agonist
Answer: C. Full agonist
Rationale: Full agonists produce the highest possible effect when bound.
,2026 UPDATED QUESTIONS DOWNLOAD
4. Phase I drug metabolism primarily involves:
A. Conjugation
B. Oxidation, reduction, hydrolysis
C. Excretion unchanged
D. Renal filtration
Answer: B. Oxidation, reduction, hydrolysis
Rationale: Phase I reactions modify the drug to increase polarity.
5. A competitive antagonist:
A. Irreversibly inhibits receptor
B. Binds permanently
C. Competes with agonist at same binding site
D. Enhances agonist effect
Answer: C. Competes with agonist at same binding site
Rationale: Competitive antagonists can be displaced by increased agonist concentration.
6. What is the half-life of a drug?
A. Time to reach maximum concentration
B. Time for plasma concentration to decrease by 50%
C. Time between doses
D. Time to eliminate drug completely
Answer: B. Time for plasma concentration to decrease by 50%
Rationale: Half-life determines dosing interval and steady state.
7. Which organ plays the largest role in drug metabolism?
A. Kidney
B. Liver
C. Lung
D. Spleen
,2026 UPDATED QUESTIONS DOWNLOAD
Answer: B. Liver
Rationale: Hepatic enzymes metabolize most drugs.
8. A prodrug requires:
A. No metabolism
B. Activation by metabolism
C. Excretion unchanged
D. Only renal elimination
Answer: B. Activation by metabolism
Rationale: Prodrugs become active after biotransformation.
9. A major adverse effect of ACE inhibitors is:
A. Bradycardia
B. Cough
C. Hyperglycemia
D. Sedation
Answer: B. Cough
Rationale: Increased bradykinin from ACE inhibition often causes cough.
10. Warfarin’s effect is monitored by:
A. aPTT
B. PT/INR
C. Blood glucose
D. Platelet count
Answer: B. PT/INR
Rationale: PT/INR reflects extrinsic pathway anticoagulation.
11. A drug that inhibits CYP450 enzymes can:
A. Decrease levels of substrate drugs
B. Increase plasma levels of substrate drugs
, 2026 UPDATED QUESTIONS DOWNLOAD
C. Increase renal clearance
D. Have no interaction
Answer: B. Increase plasma levels of substrate drugs
Rationale: Inhibition reduces metabolism, raising substrate drug concentration.
12. The loading dose is given to:
A. Delay onset
B. Achieve therapeutic concentration quickly
C. Prevent side effects
D. Taper off drug
Answer: B. Achieve therapeutic concentration quickly
Rationale: Loading doses expedite reaching steady state for certain drugs.
13. A partial agonist has:
A. No effect
B. Less maximal effect than full agonist
C. Greater effect than full agonist
D. Only antagonist properties
Answer: B. Less maximal effect than full agonist
Rationale: Partial agonists bind receptors but produce submaximal response.
14. Kidney elimination primarily involves:
A. Metabolism
B. Filtration, secretion, reabsorption
C. Only filtration
D. Only exhalation
Answer: B. Filtration, secretion, reabsorption
Rationale: All three nephron processes influence renal elimination.
15. A drug with low bioavailability likely has:
