WGU D116 Advanced Pharmacology OA exam verified with correct
answers and rationales 2026/2027 version
1. Which statement best describes pharmacokinetics?
A. What the drug does to the body
B. What the body does to the drug through ADME processes
C. How drugs interact with receptors only
D. How adverse effects are treated
Correct Answer: B
Rationale: Pharmacokinetics describes absorption, distribution, metabolism, and
excretion (ADME)—the movement of a drug through the body. Pharmacodynamics
describes the effects of the drug on the body.
2. Which organ is primarily responsible for drug metabolism?
A. Heart
B. Liver
C. Lung
D. Skin
Correct Answer: B
Rationale: The liver is the major site of drug metabolism, especially through the
cytochrome P450 enzyme system.
3. A patient with severe liver impairment is prescribed a medication
metabolized by CYP450 enzymes. Which pharmacokinetic process is most
affected?
A. Absorption
B. Distribution
C. Metabolism
D. Excretion
,Correct Answer: C
Rationale: Liver impairment reduces the body's ability to metabolize drugs,
increasing drug levels and risk of toxicity.
4. Which term describes the maximum effect a drug can produce?
A. Potency
B. Efficacy
C. Bioavailability
D. Clearance
Correct Answer: B
Rationale: Efficacy refers to the maximum therapeutic effect a medication can
achieve.
5. A drug that binds to a receptor and produces a response is called a(n):
A. Antagonist
B. Agonist
C. Inhibitor
D. Blocker
Correct Answer: B
Rationale: An agonist activates a receptor and produces a biological response.
6. A medication that binds to a receptor but prevents activation is called a(n):
A. Agonist
B. Antagonist
C. Enzyme activator
D. Partial agonist
Correct Answer: B
,Rationale: Antagonists block receptor activation and prevent agonists from
producing effects.
7. Which factor increases the risk of medication toxicity in older adults?
A. Increased kidney function
B. Reduced renal clearance
C. Increased metabolism
D. Faster drug elimination
Correct Answer: B
Rationale: Aging commonly decreases renal function, causing medications to
remain longer in the body and increasing toxicity risk.
8. The half-life of a medication refers to:
A. Time required for drug concentration to decrease by 50%
B. Time required for absorption
C. Time until medication becomes toxic
D. Time until medication reaches the liver
Correct Answer: A
Rationale: Half-life is the time needed for the plasma drug concentration to
decrease by half.
9. Which patient factor is most important when prescribing medications?
A. Favorite foods
B. Kidney and liver function
C. Clothing preference
D. Room assignment
Correct Answer: B
, Rationale: Kidney and liver function influence drug clearance and safety.
10. Bioavailability refers to:
A. Amount of drug reaching systemic circulation
B. Drug color and appearance
C. Medication cost
D. Duration of prescription
Correct Answer: A
Rationale: Bioavailability is the fraction of an administered drug that reaches
circulation and becomes available for action.
11. Which medication class blocks beta-adrenergic receptors?
A. Beta blockers
B. ACE inhibitors
C. Diuretics
D. Calcium supplements
Correct Answer: A
Rationale: Beta blockers reduce sympathetic stimulation by blocking beta
receptors, decreasing heart rate and blood pressure.
12. A patient taking an ACE inhibitor should be monitored for which adverse
effect?
A. Dry cough
B. Hearing loss
C. Constipation
D. Increased appetite
Correct Answer: A
answers and rationales 2026/2027 version
1. Which statement best describes pharmacokinetics?
A. What the drug does to the body
B. What the body does to the drug through ADME processes
C. How drugs interact with receptors only
D. How adverse effects are treated
Correct Answer: B
Rationale: Pharmacokinetics describes absorption, distribution, metabolism, and
excretion (ADME)—the movement of a drug through the body. Pharmacodynamics
describes the effects of the drug on the body.
2. Which organ is primarily responsible for drug metabolism?
A. Heart
B. Liver
C. Lung
D. Skin
Correct Answer: B
Rationale: The liver is the major site of drug metabolism, especially through the
cytochrome P450 enzyme system.
3. A patient with severe liver impairment is prescribed a medication
metabolized by CYP450 enzymes. Which pharmacokinetic process is most
affected?
A. Absorption
B. Distribution
C. Metabolism
D. Excretion
,Correct Answer: C
Rationale: Liver impairment reduces the body's ability to metabolize drugs,
increasing drug levels and risk of toxicity.
4. Which term describes the maximum effect a drug can produce?
A. Potency
B. Efficacy
C. Bioavailability
D. Clearance
Correct Answer: B
Rationale: Efficacy refers to the maximum therapeutic effect a medication can
achieve.
5. A drug that binds to a receptor and produces a response is called a(n):
A. Antagonist
B. Agonist
C. Inhibitor
D. Blocker
Correct Answer: B
Rationale: An agonist activates a receptor and produces a biological response.
6. A medication that binds to a receptor but prevents activation is called a(n):
A. Agonist
B. Antagonist
C. Enzyme activator
D. Partial agonist
Correct Answer: B
,Rationale: Antagonists block receptor activation and prevent agonists from
producing effects.
7. Which factor increases the risk of medication toxicity in older adults?
A. Increased kidney function
B. Reduced renal clearance
C. Increased metabolism
D. Faster drug elimination
Correct Answer: B
Rationale: Aging commonly decreases renal function, causing medications to
remain longer in the body and increasing toxicity risk.
8. The half-life of a medication refers to:
A. Time required for drug concentration to decrease by 50%
B. Time required for absorption
C. Time until medication becomes toxic
D. Time until medication reaches the liver
Correct Answer: A
Rationale: Half-life is the time needed for the plasma drug concentration to
decrease by half.
9. Which patient factor is most important when prescribing medications?
A. Favorite foods
B. Kidney and liver function
C. Clothing preference
D. Room assignment
Correct Answer: B
, Rationale: Kidney and liver function influence drug clearance and safety.
10. Bioavailability refers to:
A. Amount of drug reaching systemic circulation
B. Drug color and appearance
C. Medication cost
D. Duration of prescription
Correct Answer: A
Rationale: Bioavailability is the fraction of an administered drug that reaches
circulation and becomes available for action.
11. Which medication class blocks beta-adrenergic receptors?
A. Beta blockers
B. ACE inhibitors
C. Diuretics
D. Calcium supplements
Correct Answer: A
Rationale: Beta blockers reduce sympathetic stimulation by blocking beta
receptors, decreasing heart rate and blood pressure.
12. A patient taking an ACE inhibitor should be monitored for which adverse
effect?
A. Dry cough
B. Hearing loss
C. Constipation
D. Increased appetite
Correct Answer: A
