1
NR565 Advanced Pharmacology Midterm Exam
2025-2026: 300+ Practice Questions
Part 1: Foundations in Pharmacology (Questions 1–80)
Pharmacokinetics & Pharmacodynamics
1. The process by which drugs are absorbed, distributed within the body, metabolized, and excreted is
called:
A) Pharmacodynamics
B) Pharmacokinetics
C) Pharmacotherapeutics
D) Pharmacogenomics
✅ Correct Answer: B
Rationale: Pharmacokinetics describes what the body does to the drug—absorption, distribution,
metabolism, and excretion (ADME). Pharmacodynamics describes what the drug does to the body.
2. The study of what the drug does to the body is called:
A) Pharmacokinetics
B) Pharmacodynamics
C) Toxicology
D) Pharmacogenetics
✅ Correct Answer: B
Rationale: Pharmacodynamics focuses on the biochemical and physiologic effects of drugs and their
mechanisms of action, including receptor binding and signal transduction.
3. Which of the following factors affects drug absorption? (Select all that apply)
A) Rate of dissolution
B) Surface area available for absorption
C) Blood flow to the absorption site
D) Lipid solubility of the drug
✅ Correct Answer: A, B, C, D
Rationale: All listed factors influence how quickly and completely a drug enters the bloodstream.
Additional factors include pH partitioning and the presence of transporters.
4. Factors that affect drug distribution include: (Select all that apply)
A) Blood flow to tissues
B) Ability to exit the vascular system
C) Blood-brain barrier
D) Protein-binding capacity
✅ Correct Answer: A, B, C, D
,2
Rationale: Distribution depends on regional blood flow, capillary permeability, tissue binding, and
plasma protein binding (primarily albumin). The blood-brain barrier restricts entry of many drugs into
the CNS.
5. Substances that are foreign to the body, usually synthetic chemical compounds, are called:
A) Endogenous compounds
B) Xenobiotics
C) Metabolites
D) Prodrugs
✅ Correct Answer: B
Rationale: Xenobiotics are chemical substances that are not naturally produced by the body.
Medications are a common example of xenobiotics.
6. The xenobiotic-metabolizing enzymes necessary for the production of cholesterol and steroids and
the detoxification of chemicals and drug metabolism are called:
A) Monoamine oxidase (MAO)
B) Cytochrome P450 (CYP450)
C) Acetylcholinesterase
D) Cyclooxygenase (COX)
✅ Correct Answer: B
Rationale: CYP450 enzymes are responsible for phase I metabolism (oxidation, reduction, hydrolysis) of
many drugs and endogenous substances.
7. Which phase of drug metabolism involves oxidation, reduction, and hydrolysis?
A) Phase I
B) Phase II
C) Phase III
D) Phase IV
✅ Correct Answer: A
Rationale: Phase I metabolism, primarily mediated by CYP450 enzymes, introduces or exposes
functional groups through oxidation, reduction, or hydrolysis. Phase II involves conjugation reactions.
8. Which of the following are possible outcomes of Phase I drug metabolism? (Select all that apply)
A) Drug becomes completely inactive
B) Drug becomes partially inactive, but metabolites remain active
C) Original drug is not pharmacologically active, but a metabolite remains active
D) Drug becomes more lipid soluble for excretion
✅ Correct Answer: A, B, C
Rationale: Phase I metabolism can inactivate a drug, convert it to a less active form with active
metabolites, or activate a prodrug. The goal is to increase water solubility for excretion, not lipid
solubility.
9. Medications that increase the rate of another drug's metabolism by elevating CYP450 enzyme
activity are called:
A) CYP450 inhibitors
B) CYP450 inducers
,3
C) CYP450 substrates
D) CYP450 antagonists
✅ Correct Answer: B
Rationale: CYP450 inducers increase enzyme synthesis, accelerating metabolism of the "parent drug"
and decreasing its concentration. This can lead to subtherapeutic effects if dosing is not adjusted.
10. Which of the following are examples of CYP450 inducers? (Select all that apply)
A) Carbamazepine
B) Rifampin
C) Alcohol (chronic use)
D) Grapefruit juice
✅ Correct Answer: A, B, C
Rationale: The mnemonic "CRAPGPS" helps recall common inducers: Carbamazepine, Rifampin,
Alcohol, Phenytoin, Griseofulvin, Phenobarbital, Sulfonylureas. Grapefruit juice is an inhibitor, not an
inducer.
11. Medications that inhibit the metabolic activity of CYP450 enzymes cause which effect?
A) Faster drug metabolism and lower drug levels
B) Slower drug metabolism and higher risk for toxicity
C) No change in drug metabolism
D) Increased excretion of the parent drug
✅ Correct Answer: B
Rationale: CYP450 inhibitors decrease the rate of drug metabolism, leading to accumulation of the
parent drug and increased risk of toxicity. Higher risk for toxicity; prolongs the pharmacological effect of
the parent drug.
12. Which of the following are examples of CYP450 inhibitors? (Select all that apply)
A) Valproate
B) Isoniazid
C) Amiodarone
D) Rifampin
✅ Correct Answer: A, B, C
Rationale: The mnemonic "VISACKGQ" helps recall inhibitors: Valproate, Isoniazid, Sulfonamides,
Amiodarone, Chloramphenicol, Ketoconazole, Grapefruit juice, Quinidine. Rifampin is an inducer, not an
inhibitor.
13. An APRN prescribes a drug metabolized by CYP3A4. The patient also takes grapefruit juice daily.
What potential interaction should the APRN anticipate?
A) Decreased drug levels and therapeutic failure
B) Increased drug levels and risk of toxicity
C) No significant interaction
D) Increased renal clearance of the drug
✅ Correct Answer: B
Rationale: Grapefruit juice is a potent CYP3A4 inhibitor. It decreases metabolism of drugs like statins,
, 4
calcium channel blockers, and certain benzodiazepines, leading to increased serum levels and toxicity
risk.
14. The Beers Criteria is used to:
A) Identify appropriate medications for pediatric patients
B) Identify potentially inappropriate medications for older adults (≥65 years)
C) Determine drug dosing in renal impairment
D) Classify controlled substances
✅ Correct Answer: B
Rationale: The Beers Criteria lists potentially inappropriate medications (PIMs) for older adults based
on risk-benefit analysis. The prescriber ultimately decides whether to use these medications, but the
criteria serve as a safety guideline.
15. Which of the following is included in the Beers Criteria? (Select all that apply)
A) PIM use in older adults
B) PIM use due to medication-disease interactions
C) Medications to be used with caution in older adults
D) Medications to be avoided or dose-reduced in renal impairment
✅ Correct Answer: A, B, C, D
Rationale: The Beers Criteria contains five lists: (1) PIMs, (2) PIMs due to medication-disease/syndrome
interactions, (3) medications to use with caution, (4) clinically significant drug interactions to avoid, and
(5) medications to avoid or dose-reduce in renal impairment.
16. Older adults are approximately how many times more likely to experience adverse drug reactions
compared to younger adults?
A) 2 times
B) 4 times
C) 7 times
D) 10 times
✅ Correct Answer: C
Rationale: Older adults are 7 times more likely to experience adverse drug reactions due to age-related
changes in absorption, distribution, metabolism, and excretion. They account for 50% of all medication-
related deaths.
17. Most adverse drug reactions in older adults are:
A) Idiosyncratic
B) Dose-related
C) Allergic
D) Idiopathic
✅ Correct Answer: B
Rationale: Most adverse drug reactions in older adults are dose-related rather than idiosyncratic. This
highlights the importance of "start low, go slow" and careful dose titration.
18. Which pharmacokinetic change in older adults has the greatest impact on drug dosing?
A) Decreased absorption
B) Decreased protein binding
NR565 Advanced Pharmacology Midterm Exam
2025-2026: 300+ Practice Questions
Part 1: Foundations in Pharmacology (Questions 1–80)
Pharmacokinetics & Pharmacodynamics
1. The process by which drugs are absorbed, distributed within the body, metabolized, and excreted is
called:
A) Pharmacodynamics
B) Pharmacokinetics
C) Pharmacotherapeutics
D) Pharmacogenomics
✅ Correct Answer: B
Rationale: Pharmacokinetics describes what the body does to the drug—absorption, distribution,
metabolism, and excretion (ADME). Pharmacodynamics describes what the drug does to the body.
2. The study of what the drug does to the body is called:
A) Pharmacokinetics
B) Pharmacodynamics
C) Toxicology
D) Pharmacogenetics
✅ Correct Answer: B
Rationale: Pharmacodynamics focuses on the biochemical and physiologic effects of drugs and their
mechanisms of action, including receptor binding and signal transduction.
3. Which of the following factors affects drug absorption? (Select all that apply)
A) Rate of dissolution
B) Surface area available for absorption
C) Blood flow to the absorption site
D) Lipid solubility of the drug
✅ Correct Answer: A, B, C, D
Rationale: All listed factors influence how quickly and completely a drug enters the bloodstream.
Additional factors include pH partitioning and the presence of transporters.
4. Factors that affect drug distribution include: (Select all that apply)
A) Blood flow to tissues
B) Ability to exit the vascular system
C) Blood-brain barrier
D) Protein-binding capacity
✅ Correct Answer: A, B, C, D
,2
Rationale: Distribution depends on regional blood flow, capillary permeability, tissue binding, and
plasma protein binding (primarily albumin). The blood-brain barrier restricts entry of many drugs into
the CNS.
5. Substances that are foreign to the body, usually synthetic chemical compounds, are called:
A) Endogenous compounds
B) Xenobiotics
C) Metabolites
D) Prodrugs
✅ Correct Answer: B
Rationale: Xenobiotics are chemical substances that are not naturally produced by the body.
Medications are a common example of xenobiotics.
6. The xenobiotic-metabolizing enzymes necessary for the production of cholesterol and steroids and
the detoxification of chemicals and drug metabolism are called:
A) Monoamine oxidase (MAO)
B) Cytochrome P450 (CYP450)
C) Acetylcholinesterase
D) Cyclooxygenase (COX)
✅ Correct Answer: B
Rationale: CYP450 enzymes are responsible for phase I metabolism (oxidation, reduction, hydrolysis) of
many drugs and endogenous substances.
7. Which phase of drug metabolism involves oxidation, reduction, and hydrolysis?
A) Phase I
B) Phase II
C) Phase III
D) Phase IV
✅ Correct Answer: A
Rationale: Phase I metabolism, primarily mediated by CYP450 enzymes, introduces or exposes
functional groups through oxidation, reduction, or hydrolysis. Phase II involves conjugation reactions.
8. Which of the following are possible outcomes of Phase I drug metabolism? (Select all that apply)
A) Drug becomes completely inactive
B) Drug becomes partially inactive, but metabolites remain active
C) Original drug is not pharmacologically active, but a metabolite remains active
D) Drug becomes more lipid soluble for excretion
✅ Correct Answer: A, B, C
Rationale: Phase I metabolism can inactivate a drug, convert it to a less active form with active
metabolites, or activate a prodrug. The goal is to increase water solubility for excretion, not lipid
solubility.
9. Medications that increase the rate of another drug's metabolism by elevating CYP450 enzyme
activity are called:
A) CYP450 inhibitors
B) CYP450 inducers
,3
C) CYP450 substrates
D) CYP450 antagonists
✅ Correct Answer: B
Rationale: CYP450 inducers increase enzyme synthesis, accelerating metabolism of the "parent drug"
and decreasing its concentration. This can lead to subtherapeutic effects if dosing is not adjusted.
10. Which of the following are examples of CYP450 inducers? (Select all that apply)
A) Carbamazepine
B) Rifampin
C) Alcohol (chronic use)
D) Grapefruit juice
✅ Correct Answer: A, B, C
Rationale: The mnemonic "CRAPGPS" helps recall common inducers: Carbamazepine, Rifampin,
Alcohol, Phenytoin, Griseofulvin, Phenobarbital, Sulfonylureas. Grapefruit juice is an inhibitor, not an
inducer.
11. Medications that inhibit the metabolic activity of CYP450 enzymes cause which effect?
A) Faster drug metabolism and lower drug levels
B) Slower drug metabolism and higher risk for toxicity
C) No change in drug metabolism
D) Increased excretion of the parent drug
✅ Correct Answer: B
Rationale: CYP450 inhibitors decrease the rate of drug metabolism, leading to accumulation of the
parent drug and increased risk of toxicity. Higher risk for toxicity; prolongs the pharmacological effect of
the parent drug.
12. Which of the following are examples of CYP450 inhibitors? (Select all that apply)
A) Valproate
B) Isoniazid
C) Amiodarone
D) Rifampin
✅ Correct Answer: A, B, C
Rationale: The mnemonic "VISACKGQ" helps recall inhibitors: Valproate, Isoniazid, Sulfonamides,
Amiodarone, Chloramphenicol, Ketoconazole, Grapefruit juice, Quinidine. Rifampin is an inducer, not an
inhibitor.
13. An APRN prescribes a drug metabolized by CYP3A4. The patient also takes grapefruit juice daily.
What potential interaction should the APRN anticipate?
A) Decreased drug levels and therapeutic failure
B) Increased drug levels and risk of toxicity
C) No significant interaction
D) Increased renal clearance of the drug
✅ Correct Answer: B
Rationale: Grapefruit juice is a potent CYP3A4 inhibitor. It decreases metabolism of drugs like statins,
, 4
calcium channel blockers, and certain benzodiazepines, leading to increased serum levels and toxicity
risk.
14. The Beers Criteria is used to:
A) Identify appropriate medications for pediatric patients
B) Identify potentially inappropriate medications for older adults (≥65 years)
C) Determine drug dosing in renal impairment
D) Classify controlled substances
✅ Correct Answer: B
Rationale: The Beers Criteria lists potentially inappropriate medications (PIMs) for older adults based
on risk-benefit analysis. The prescriber ultimately decides whether to use these medications, but the
criteria serve as a safety guideline.
15. Which of the following is included in the Beers Criteria? (Select all that apply)
A) PIM use in older adults
B) PIM use due to medication-disease interactions
C) Medications to be used with caution in older adults
D) Medications to be avoided or dose-reduced in renal impairment
✅ Correct Answer: A, B, C, D
Rationale: The Beers Criteria contains five lists: (1) PIMs, (2) PIMs due to medication-disease/syndrome
interactions, (3) medications to use with caution, (4) clinically significant drug interactions to avoid, and
(5) medications to avoid or dose-reduce in renal impairment.
16. Older adults are approximately how many times more likely to experience adverse drug reactions
compared to younger adults?
A) 2 times
B) 4 times
C) 7 times
D) 10 times
✅ Correct Answer: C
Rationale: Older adults are 7 times more likely to experience adverse drug reactions due to age-related
changes in absorption, distribution, metabolism, and excretion. They account for 50% of all medication-
related deaths.
17. Most adverse drug reactions in older adults are:
A) Idiosyncratic
B) Dose-related
C) Allergic
D) Idiopathic
✅ Correct Answer: B
Rationale: Most adverse drug reactions in older adults are dose-related rather than idiosyncratic. This
highlights the importance of "start low, go slow" and careful dose titration.
18. Which pharmacokinetic change in older adults has the greatest impact on drug dosing?
A) Decreased absorption
B) Decreased protein binding
