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NSG 124 FINAL EXAM – HERZING PHARMACOLOGY
NCLEX STYLE 2026/2027 COMPLETE CURRENT TESTING
QUESTIONS AND CORRECT ANSWERS WITH DETAILED
RATIONALES.
PHARMACOLOGY
Prepare for the NSG 124 Final Exam with this focused Pharmacology NCLEX-style
study resource from Herzing University. It is designed to reinforce essential
pharmacology concepts, medication administration, drug classifications, adverse
effects, safety considerations, and nursing interventions. The NCLEX-style format
helps you practice applying pharmacology knowledge to clinical scenarios while
strengthening prioritization and test-taking skills. Use this resource alongside your
coursework to review key material and build confidence for the final exam.
MULTIPLE CHOICE.
Module 1: Pharmacokinetics & Pharmacodynamics (Questions 1–15)
1. A nurse is preparing to administer a medication that undergoes
extensive first-pass metabolism. Which route of administration would
bypass this effect?
A. Oral
B. Sublingual
C. Rectal
D. Enteral
Answer: B
Rationale: Sublingual administration bypasses the hepatic first-pass
effect because the drug is absorbed directly into the systemic circulation
via the sublingual veins. Oral and enteral routes undergo first-pass
metabolism. Rectal administration partially bypasses first-pass
metabolism but is not the best answer here.
2. Which pharmacokinetic process involves the movement of a drug from
its site of administration into the bloodstream?
A. Distribution
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B. Metabolism
C. Absorption
D. Excretion
Answer: C
Rationale: Absorption is the movement of a drug from its site of
administration into the bloodstream. Distribution is the movement of the
drug from the blood into tissues. Metabolism is biotransformation, and
excretion is the removal of the drug from the body.
3. A patient is prescribed a drug that is a potent enzyme inducer. Which
effect would this have on another drug metabolized by the same enzyme?
A. Increased plasma levels of the second drug
B. Decreased plasma levels of the second drug
C. No effect on the second drug
D. Increased toxicity of the second drug
Answer: B
Rationale: Enzyme inducers increase the activity of metabolic enzymes,
leading to faster metabolism and decreased plasma levels of drugs
metabolized by the same enzyme. This can reduce the therapeutic effect
of the second drug.
4. Which statement best describes the concept of a drug's half-life (t½)?
A. The time required for the drug to be completely eliminated from the body
B. The time required for the plasma concentration of the drug to decrease by
50%
C. The time required for the drug to reach its maximum effect
D. The time required for the drug to be absorbed
Answer: B
Rationale: The half-life is the time required for the plasma concentration
of a drug to decrease by 50%. It takes approximately 4–5 half-lives to
reach steady state or to eliminate most of the drug from the body.
5. A patient is taking a drug that is highly protein-bound. Which situation
could increase the free (active) fraction of the drug and potentially cause
toxicity?
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A. Increased albumin levels
B. Decreased albumin levels
C. Increased renal excretion
D. Increased hepatic metabolism
Answer: B
Rationale: Decreased albumin levels (e.g., in malnutrition, liver disease,
or nephrotic syndrome) reduce the number of binding sites, increasing
the free (active) fraction of highly protein-bound drugs, which can lead to
toxicity.
6. Which of the following best describes a drug's therapeutic index?
A. The ratio of the toxic dose to the therapeutic dose
B. The ratio of the effective dose to the lethal dose
C. The time required for the drug to reach peak effect
D. The percentage of the drug that is absorbed
Answer: A
Rationale: The therapeutic index is the ratio of the toxic dose to the
therapeutic dose. A narrow therapeutic index means there is a small
margin between therapeutic and toxic doses, requiring careful
monitoring.
7. A patient is prescribed a drug that is eliminated by zero-order kinetics.
Which statement is true about this drug?
A. A constant fraction of the drug is eliminated per unit time.
B. A constant amount of the drug is eliminated per unit time.
C. The elimination rate is proportional to plasma concentration.
D. The drug has a very short half-life.
Answer: B
Rationale: Zero-order kinetics means a constant amount of the drug is
eliminated per unit time, regardless of plasma concentration. This can
lead to accumulation and toxicity because elimination pathways become
saturated.
8. A drug that is a prodrug requires which of the following to become
active?
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A. Excretion
B. Metabolism
C. Absorption
D. Distribution
Answer: B
Rationale: A prodrug is an inactive compound that requires metabolic
conversion (usually in the liver) to become an active drug. Examples
include valacyclovir and enalapril.
9. Which receptor type is directly coupled to ion channels and mediates
rapid responses?
A. G protein-coupled receptors
B. Ligand-gated ion channels
C. Nuclear receptors
D. Tyrosine kinase receptors
Answer: B
Rationale: Ligand-gated ion channels are directly coupled to ion channels
and mediate rapid responses, such as those seen with neurotransmitters.
G protein-coupled receptors and nuclear receptors mediate slower
responses.
10. A patient is taking a drug that acts as a competitive antagonist. What
effect does this have on the agonist dose-response curve?
A. It shifts the curve to the right.
B. It shifts the curve to the left.
C. It decreases the maximal efficacy.
D. It has no effect on the curve.
Answer: A
Rationale: A competitive antagonist shifts the agonist dose-response
curve to the right, meaning higher doses of the agonist are needed to
achieve the same effect. It does not decrease maximal efficacy if enough
agonist is available.
11. Which of the following is an example of a drug that acts via a non-
receptor mechanism?
NSG 124 FINAL EXAM – HERZING PHARMACOLOGY
NCLEX STYLE 2026/2027 COMPLETE CURRENT TESTING
QUESTIONS AND CORRECT ANSWERS WITH DETAILED
RATIONALES.
PHARMACOLOGY
Prepare for the NSG 124 Final Exam with this focused Pharmacology NCLEX-style
study resource from Herzing University. It is designed to reinforce essential
pharmacology concepts, medication administration, drug classifications, adverse
effects, safety considerations, and nursing interventions. The NCLEX-style format
helps you practice applying pharmacology knowledge to clinical scenarios while
strengthening prioritization and test-taking skills. Use this resource alongside your
coursework to review key material and build confidence for the final exam.
MULTIPLE CHOICE.
Module 1: Pharmacokinetics & Pharmacodynamics (Questions 1–15)
1. A nurse is preparing to administer a medication that undergoes
extensive first-pass metabolism. Which route of administration would
bypass this effect?
A. Oral
B. Sublingual
C. Rectal
D. Enteral
Answer: B
Rationale: Sublingual administration bypasses the hepatic first-pass
effect because the drug is absorbed directly into the systemic circulation
via the sublingual veins. Oral and enteral routes undergo first-pass
metabolism. Rectal administration partially bypasses first-pass
metabolism but is not the best answer here.
2. Which pharmacokinetic process involves the movement of a drug from
its site of administration into the bloodstream?
A. Distribution
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B. Metabolism
C. Absorption
D. Excretion
Answer: C
Rationale: Absorption is the movement of a drug from its site of
administration into the bloodstream. Distribution is the movement of the
drug from the blood into tissues. Metabolism is biotransformation, and
excretion is the removal of the drug from the body.
3. A patient is prescribed a drug that is a potent enzyme inducer. Which
effect would this have on another drug metabolized by the same enzyme?
A. Increased plasma levels of the second drug
B. Decreased plasma levels of the second drug
C. No effect on the second drug
D. Increased toxicity of the second drug
Answer: B
Rationale: Enzyme inducers increase the activity of metabolic enzymes,
leading to faster metabolism and decreased plasma levels of drugs
metabolized by the same enzyme. This can reduce the therapeutic effect
of the second drug.
4. Which statement best describes the concept of a drug's half-life (t½)?
A. The time required for the drug to be completely eliminated from the body
B. The time required for the plasma concentration of the drug to decrease by
50%
C. The time required for the drug to reach its maximum effect
D. The time required for the drug to be absorbed
Answer: B
Rationale: The half-life is the time required for the plasma concentration
of a drug to decrease by 50%. It takes approximately 4–5 half-lives to
reach steady state or to eliminate most of the drug from the body.
5. A patient is taking a drug that is highly protein-bound. Which situation
could increase the free (active) fraction of the drug and potentially cause
toxicity?
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A. Increased albumin levels
B. Decreased albumin levels
C. Increased renal excretion
D. Increased hepatic metabolism
Answer: B
Rationale: Decreased albumin levels (e.g., in malnutrition, liver disease,
or nephrotic syndrome) reduce the number of binding sites, increasing
the free (active) fraction of highly protein-bound drugs, which can lead to
toxicity.
6. Which of the following best describes a drug's therapeutic index?
A. The ratio of the toxic dose to the therapeutic dose
B. The ratio of the effective dose to the lethal dose
C. The time required for the drug to reach peak effect
D. The percentage of the drug that is absorbed
Answer: A
Rationale: The therapeutic index is the ratio of the toxic dose to the
therapeutic dose. A narrow therapeutic index means there is a small
margin between therapeutic and toxic doses, requiring careful
monitoring.
7. A patient is prescribed a drug that is eliminated by zero-order kinetics.
Which statement is true about this drug?
A. A constant fraction of the drug is eliminated per unit time.
B. A constant amount of the drug is eliminated per unit time.
C. The elimination rate is proportional to plasma concentration.
D. The drug has a very short half-life.
Answer: B
Rationale: Zero-order kinetics means a constant amount of the drug is
eliminated per unit time, regardless of plasma concentration. This can
lead to accumulation and toxicity because elimination pathways become
saturated.
8. A drug that is a prodrug requires which of the following to become
active?
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A. Excretion
B. Metabolism
C. Absorption
D. Distribution
Answer: B
Rationale: A prodrug is an inactive compound that requires metabolic
conversion (usually in the liver) to become an active drug. Examples
include valacyclovir and enalapril.
9. Which receptor type is directly coupled to ion channels and mediates
rapid responses?
A. G protein-coupled receptors
B. Ligand-gated ion channels
C. Nuclear receptors
D. Tyrosine kinase receptors
Answer: B
Rationale: Ligand-gated ion channels are directly coupled to ion channels
and mediate rapid responses, such as those seen with neurotransmitters.
G protein-coupled receptors and nuclear receptors mediate slower
responses.
10. A patient is taking a drug that acts as a competitive antagonist. What
effect does this have on the agonist dose-response curve?
A. It shifts the curve to the right.
B. It shifts the curve to the left.
C. It decreases the maximal efficacy.
D. It has no effect on the curve.
Answer: A
Rationale: A competitive antagonist shifts the agonist dose-response
curve to the right, meaning higher doses of the agonist are needed to
achieve the same effect. It does not decrease maximal efficacy if enough
agonist is available.
11. Which of the following is an example of a drug that acts via a non-
receptor mechanism?
