WGU D116 ADVANCED
PHARMACOLOGY FINAL EXAM
OBJECTIVE ASSESSMENT QUESTIONS
AND ANSWERS
1. A patient with chronic kidney disease is prescribed a drug that is primarily excreted renally.
Which pharmacokinetic parameter change is most likely to necessitate a dose reduction?
A. Increased volume of distribution
B. Decreased elimination half-life
C. Increased first-pass metabolism
D. Decreased clearance
Answer: D
Conceptual Explanation: Clearance is the volume of plasma cleared of drug per unit time.
In renal failure, clearance decreases, leading to drug accumulation and potential toxicity
unless the dose is adjusted.
2. Which of the following describes the ‘first-pass effect’ in pharmacology?
A. The initial distribution of a drug to highly perfused organs
B. Metabolism of a drug in the liver before it reaches systemic circulation
,C. The rapid excretion of a drug by the kidneys immediately after administration
D. The binding of a drug to plasma proteins during its first circuit through the blood
Answer: B
Conceptual Explanation: The first-pass effect refers to the metabolic reduction of a drug’s
concentration by the liver or gut wall before it reaches the systemic circulation, primarily
affecting oral medications.
3. An agonist that binds to a receptor but produces a submaximal response compared to a full
agonist is known as a:
A. Competitive antagonist
B. Inverse agonist
C. Partial agonist
D. Allosteric modulator
Answer: C
Conceptual Explanation: Partial agonists have intrinsic activity greater than zero but less
than one, meaning they cannot produce a maximal response even at 100% receptor
occupancy.
4. Which drug acts as a selective Beta-1 adrenergic antagonist?
A. Propranolol
B. Labetalol
, C. Carvedilol
D. Metoprolol
Answer: D
Conceptual Explanation: Metoprolol is a cardioselective Beta-1 blocker, whereas
Propranolol is non-selective, and Carvedilol/Labetalol have alpha-blocking properties as
well.
5. What is the mechanism of action of ACE inhibitors in the treatment of hypertension?
A. Blocking Angiotensin II receptors in the adrenal cortex
B. Directly inhibiting the release of Renin
C. Blocking the conversion of Angiotensin I to Angiotensin II
D. Antagonizing the effects of Aldosterone in the distal tubule
Answer: C
Conceptual Explanation: ACE inhibitors block the Angiotensin-Converting Enzyme,
preventing the production of Angiotensin II, a potent vasoconstrictor.
6. A patient taking Lisinopril develops a persistent, dry cough. Which alternative medication
class is most appropriate to avoid this specific side effect?
A. Calcium Channel Blockers
B. Beta Blockers
C. Angiotensin II Receptor Blockers (ARBs)
PHARMACOLOGY FINAL EXAM
OBJECTIVE ASSESSMENT QUESTIONS
AND ANSWERS
1. A patient with chronic kidney disease is prescribed a drug that is primarily excreted renally.
Which pharmacokinetic parameter change is most likely to necessitate a dose reduction?
A. Increased volume of distribution
B. Decreased elimination half-life
C. Increased first-pass metabolism
D. Decreased clearance
Answer: D
Conceptual Explanation: Clearance is the volume of plasma cleared of drug per unit time.
In renal failure, clearance decreases, leading to drug accumulation and potential toxicity
unless the dose is adjusted.
2. Which of the following describes the ‘first-pass effect’ in pharmacology?
A. The initial distribution of a drug to highly perfused organs
B. Metabolism of a drug in the liver before it reaches systemic circulation
,C. The rapid excretion of a drug by the kidneys immediately after administration
D. The binding of a drug to plasma proteins during its first circuit through the blood
Answer: B
Conceptual Explanation: The first-pass effect refers to the metabolic reduction of a drug’s
concentration by the liver or gut wall before it reaches the systemic circulation, primarily
affecting oral medications.
3. An agonist that binds to a receptor but produces a submaximal response compared to a full
agonist is known as a:
A. Competitive antagonist
B. Inverse agonist
C. Partial agonist
D. Allosteric modulator
Answer: C
Conceptual Explanation: Partial agonists have intrinsic activity greater than zero but less
than one, meaning they cannot produce a maximal response even at 100% receptor
occupancy.
4. Which drug acts as a selective Beta-1 adrenergic antagonist?
A. Propranolol
B. Labetalol
, C. Carvedilol
D. Metoprolol
Answer: D
Conceptual Explanation: Metoprolol is a cardioselective Beta-1 blocker, whereas
Propranolol is non-selective, and Carvedilol/Labetalol have alpha-blocking properties as
well.
5. What is the mechanism of action of ACE inhibitors in the treatment of hypertension?
A. Blocking Angiotensin II receptors in the adrenal cortex
B. Directly inhibiting the release of Renin
C. Blocking the conversion of Angiotensin I to Angiotensin II
D. Antagonizing the effects of Aldosterone in the distal tubule
Answer: C
Conceptual Explanation: ACE inhibitors block the Angiotensin-Converting Enzyme,
preventing the production of Angiotensin II, a potent vasoconstrictor.
6. A patient taking Lisinopril develops a persistent, dry cough. Which alternative medication
class is most appropriate to avoid this specific side effect?
A. Calcium Channel Blockers
B. Beta Blockers
C. Angiotensin II Receptor Blockers (ARBs)
