Pharmacology for Nursing Practice: Comprehensive Exam Bank Adams, 6th Edition – NCLEX-PN/RN Focused Practice 2026–2027

Pharmacology for Nursing Practice:
Comprehensive Exam Bank
Adams, 6th Edition – NCLEX-PN/RN Focused
Practice 2026–2027

Section 1: Pharmacokinetics & Pharmacodynamics
Question 1: A drug that binds to a receptor and produces a maximal response is known as a(n):
 A) Antagonist
 B) Partial agonist
 C) Full agonist
 D) Competitive inhibitor
Answer: C) Full agonist
Rationale: A full agonist binds to a receptor and produces a maximal biological response. An
antagonist binds but produces no response; a partial agonist produces a submaximal response;
a competitive inhibitor competes with agonists but does not activate the receptor.


Question 2: Which route of drug administration provides the fastest onset of action?
 A) Oral
 B) Intramuscular
 C) Intravenous
 D) Subcutaneous
Answer: C) Intravenous
Rationale: Intravenous administration delivers the drug directly into the bloodstream, achieving
immediate systemic circulation and the fastest onset. Oral requires absorption via GI tract; IM
and SC require absorption from muscle or subcutaneous tissue.


Question 3: The nurse is teaching about drug half-life. Which statement is correct?
 A) Half-life is the time needed for the drug to reach peak effect

,  B) Half-life is the time required for 50% of the drug to be eliminated
 C) Half-life is the time for the drug to be completely cleared
 D) Half-life determines the drug's mechanism of action
Answer: B) Half-life is the time required for 50% of the drug to be eliminated
Rationale: Half-life (t½) is the time it takes for the plasma concentration of a drug to decrease
by 50%. It is used to determine dosing intervals. It does not measure peak effect, complete
clearance, or mechanism of action.


Question 4: A patient with liver disease is at risk for drug toxicity due to:
 A) Reduced renal excretion
 B) Impaired first-pass metabolism
 C) Increased protein binding
 D) Enhanced drug absorption
Answer: B) Impaired first-pass metabolism
Rationale: The liver is the primary site of drug metabolism (first-pass effect). Liver disease
reduces metabolism, leading to higher drug levels and toxicity. Renal excretion is related to the
kidneys; protein binding is altered in other conditions.


Question 5: Which factor most significantly affects drug absorption after oral administration?
 A) Cardiac output
 B) Gastric emptying time
 C) Liver function
 D) Kidney function
Answer: B) Gastric emptying time
Rationale: Gastric emptying time affects the rate at which the drug reaches the small intestine
(primary absorption site). Cardiac output affects distribution, liver affects metabolism, and
kidneys affect excretion.


Question 6: A drug with a narrow therapeutic index requires:
 A) Less frequent monitoring

,  B) Frequent serum level monitoring
 C) Higher doses to be effective
 D) Lower doses to be effective
Answer: B) Frequent serum level monitoring
Rationale: A narrow therapeutic index means the difference between therapeutic and toxic
doses is small, requiring tight monitoring of serum levels to avoid toxicity (e.g., digoxin, lithium,
warfarin).


Question 7: Which receptor type is associated with the parasympathetic nervous system and is
activated by muscarinic agonists?
 A) Nicotinic
 B) Beta-adrenergic
 C) Muscarinic
 D) Alpha-adrenergic
Answer: C) Muscarinic
Rationale: Muscarinic receptors are cholinergic receptors in the parasympathetic nervous
system. Nicotinic receptors are at neuromuscular junctions; beta and alpha are adrenergic
receptors for sympathetic stimulation.


Question 8: The nurse administers naloxone to a patient. This drug acts as a(n):
 A) Agonist at opioid receptors
 B) Antagonist at opioid receptors
 C) Partial agonist at opioid receptors
 D) Inverse agonist at opioid receptors
Answer: B) Antagonist at opioid receptors
Rationale: Naloxone is a pure opioid receptor antagonist—it binds to opioid receptors without
activating them, reversing the effects of opioid agonists such as morphine or heroin.


Question 9: The volume of distribution (Vd) of a drug is increased in which condition?
 A) Dehydration

,  B) Edema
 C) Reduced plasma protein levels
 D) Increased fat mass
Answer: C) Reduced plasma protein levels
Rationale: Vd is the extent of drug distribution into body tissues. Reduced plasma protein
(albumin) means more free drug is available to distribute into tissues, increasing Vd. Edema
increases Vd, but reduced protein is a primary factor for many drugs.


Question 10: Which phase of drug metabolism involves conjugation reactions to increase water
solubility?
 A) Phase I
 B) Phase II
 C) Phase III
 D) Phase IV
Answer: B) Phase II
Rationale: Phase II metabolism involves conjugation (e.g., glucuronidation, sulfation) to make
drugs more water-soluble for renal excretion. Phase I involves oxidation, reduction, or hydrolysis
(e.g., cytochrome P450 system).


Section 2: Antibiotics & Antimicrobials
Question 11: A patient is prescribed amoxicillin for a respiratory infection. Which adverse effect
is most common?
 A) Nephrotoxicity
 B) Diarrhea
 C) Ototoxicity
 D) Hepatotoxicity
Answer: B) Diarrhea
Rationale: Diarrhea is the most common adverse effect of amoxicillin and other penicillins due
to alteration of normal GI flora. Nephrotoxicity and ototoxicity are associated with
aminoglycosides; hepatotoxicity is less common with penicillins.