NUR 615 Pharmacology Module 1 Exam: Principles of Pharmacokinetics, Pharmacodynamics,
Autonomic Pharmacology, and Drug Development – 2026 Update with Rationales
Questions 1–150
1. A drug with high first-pass metabolism is given orally. What is the most likely outcome?
A) Increased bioavailability
B) Rapid renal excretion
C) Significant liver metabolism before reaching circulation
D) Complete absorption in the stomach
Correct Answer: C
Explanation: High first-pass metabolism means the liver metabolizes a large portion of the drug before
it enters systemic circulation, reducing bioavailability.
2. Which phase of drug development involves post-marketing surveillance?
A) Phase I
B) Phase II
C) Phase III
D) Phase IV
Correct Answer: D
Explanation: Phase IV occurs after FDA approval and monitors long-term safety, effectiveness, and rare
adverse effects in the general population.
3. A patient has hypoalbuminemia. How does this affect drug therapy?
A) Decreased free drug concentration
B) Increased protein binding
C) Increased free drug concentration and risk of toxicity
D) No change in drug distribution
Correct Answer: C
Explanation: Hypoalbuminemia reduces protein binding sites, leading to more free (active) drug, which
can cause toxicity.
4. Which CYP450 enzyme is responsible for metabolizing the largest number of drugs?
A) CYP1A2
B) CYP2C9
C) CYP2D6
D) CYP3A4
Correct Answer: D
Explanation: CYP3A4 metabolizes approximately 50% of all marketed drugs.
,5. A loading dose is most appropriate for which situation?
A) When a drug has a short half-life
B) When rapid therapeutic effect is needed
C) When the drug is excreted renally
D) When the drug has low protein binding
Correct Answer: B
Explanation: Loading doses quickly achieve therapeutic levels, especially for drugs with long half-lives.
6. Steady-state concentration is achieved after approximately how many half-lives?
A) 1–2
B) 3–5
C) 6–8
D) 10–12
Correct Answer: B
Explanation: Steady state is typically reached after 4–5 half-lives, with drug accumulation and
elimination balancing.
7. A type I hypersensitivity reaction is mediated by which immunoglobulin?
A) IgA
B) IgD
C) IgE
D) IgG
Correct Answer: C
Explanation: Type I reactions (e.g., anaphylaxis) are IgE-mediated, causing mast cell degranulation.
8. Off-label prescribing is:
A) Always illegal
B) Legal if supported by evidence and clinical judgment
C) Only allowed for pediatric patients
D) Prohibited by the FDA
Correct Answer: B
Explanation: Off-label use is legal and common, but must be based on scientific rationale and standard
of care.
9. A drug that blocks beta-1 receptors would most likely cause:
A) Tachycardia
B) Increased contractility
C) Bradycardia
D) Bronchodilation
Correct Answer: C
Explanation: Beta-1 blockade in the heart decreases heart rate (negative chronotropy) and contractility.
10. Albuterol is an agonist at which receptor?
A) Alpha-1
, B) Beta-1
C) Beta-2
D) Muscarinic
Correct Answer: C
Explanation: Albuterol is a selective beta-2 agonist, causing bronchodilation.
11. Which schedule of controlled substances has the highest abuse potential and no accepted
medical use?
A) Schedule I
B) Schedule II
C) Schedule III
D) Schedule IV
Correct Answer: A
Explanation: Schedule I drugs (heroin, LSD) have high abuse potential and no approved medical use in
the U.S.
12. Muscarinic receptors are primarily associated with which nervous system?
A) Sympathetic
B) Parasympathetic
C) Somatic motor
D) Enteric only
Correct Answer: B
Explanation: Muscarinic receptors are activated by acetylcholine and mediate parasympathetic effects.
13. Nicotinic receptors are found on:
A) Sweat glands only
B) Postganglionic neurons and skeletal muscle
C) Cardiac muscle
D) Vascular endothelium
Correct Answer: B
Explanation: Nicotinic receptors are ligand-gated ion channels on autonomic ganglia and
neuromuscular junctions.
14. A patient on a beta-blocker develops bronchospasm. Which receptor is likely involved?
A) Beta-1 blockade
B) Beta-2 blockade
C) Alpha-1 stimulation
D) Muscarinic stimulation
Correct Answer: B
Explanation: Non-selective beta-blockers block beta-2 receptors in the lungs, causing
bronchoconstriction.
15. The mnemonic "ABCDS" for antimuscarinic side effects includes all EXCEPT:
A) Agitation
Autonomic Pharmacology, and Drug Development – 2026 Update with Rationales
Questions 1–150
1. A drug with high first-pass metabolism is given orally. What is the most likely outcome?
A) Increased bioavailability
B) Rapid renal excretion
C) Significant liver metabolism before reaching circulation
D) Complete absorption in the stomach
Correct Answer: C
Explanation: High first-pass metabolism means the liver metabolizes a large portion of the drug before
it enters systemic circulation, reducing bioavailability.
2. Which phase of drug development involves post-marketing surveillance?
A) Phase I
B) Phase II
C) Phase III
D) Phase IV
Correct Answer: D
Explanation: Phase IV occurs after FDA approval and monitors long-term safety, effectiveness, and rare
adverse effects in the general population.
3. A patient has hypoalbuminemia. How does this affect drug therapy?
A) Decreased free drug concentration
B) Increased protein binding
C) Increased free drug concentration and risk of toxicity
D) No change in drug distribution
Correct Answer: C
Explanation: Hypoalbuminemia reduces protein binding sites, leading to more free (active) drug, which
can cause toxicity.
4. Which CYP450 enzyme is responsible for metabolizing the largest number of drugs?
A) CYP1A2
B) CYP2C9
C) CYP2D6
D) CYP3A4
Correct Answer: D
Explanation: CYP3A4 metabolizes approximately 50% of all marketed drugs.
,5. A loading dose is most appropriate for which situation?
A) When a drug has a short half-life
B) When rapid therapeutic effect is needed
C) When the drug is excreted renally
D) When the drug has low protein binding
Correct Answer: B
Explanation: Loading doses quickly achieve therapeutic levels, especially for drugs with long half-lives.
6. Steady-state concentration is achieved after approximately how many half-lives?
A) 1–2
B) 3–5
C) 6–8
D) 10–12
Correct Answer: B
Explanation: Steady state is typically reached after 4–5 half-lives, with drug accumulation and
elimination balancing.
7. A type I hypersensitivity reaction is mediated by which immunoglobulin?
A) IgA
B) IgD
C) IgE
D) IgG
Correct Answer: C
Explanation: Type I reactions (e.g., anaphylaxis) are IgE-mediated, causing mast cell degranulation.
8. Off-label prescribing is:
A) Always illegal
B) Legal if supported by evidence and clinical judgment
C) Only allowed for pediatric patients
D) Prohibited by the FDA
Correct Answer: B
Explanation: Off-label use is legal and common, but must be based on scientific rationale and standard
of care.
9. A drug that blocks beta-1 receptors would most likely cause:
A) Tachycardia
B) Increased contractility
C) Bradycardia
D) Bronchodilation
Correct Answer: C
Explanation: Beta-1 blockade in the heart decreases heart rate (negative chronotropy) and contractility.
10. Albuterol is an agonist at which receptor?
A) Alpha-1
, B) Beta-1
C) Beta-2
D) Muscarinic
Correct Answer: C
Explanation: Albuterol is a selective beta-2 agonist, causing bronchodilation.
11. Which schedule of controlled substances has the highest abuse potential and no accepted
medical use?
A) Schedule I
B) Schedule II
C) Schedule III
D) Schedule IV
Correct Answer: A
Explanation: Schedule I drugs (heroin, LSD) have high abuse potential and no approved medical use in
the U.S.
12. Muscarinic receptors are primarily associated with which nervous system?
A) Sympathetic
B) Parasympathetic
C) Somatic motor
D) Enteric only
Correct Answer: B
Explanation: Muscarinic receptors are activated by acetylcholine and mediate parasympathetic effects.
13. Nicotinic receptors are found on:
A) Sweat glands only
B) Postganglionic neurons and skeletal muscle
C) Cardiac muscle
D) Vascular endothelium
Correct Answer: B
Explanation: Nicotinic receptors are ligand-gated ion channels on autonomic ganglia and
neuromuscular junctions.
14. A patient on a beta-blocker develops bronchospasm. Which receptor is likely involved?
A) Beta-1 blockade
B) Beta-2 blockade
C) Alpha-1 stimulation
D) Muscarinic stimulation
Correct Answer: B
Explanation: Non-selective beta-blockers block beta-2 receptors in the lungs, causing
bronchoconstriction.
15. The mnemonic "ABCDS" for antimuscarinic side effects includes all EXCEPT:
A) Agitation
