NR565 / NR 565 MIDTERM EXAM STUDY GUIDE |
ADVANCED PHARMACOLOGY PRACTICE
QUESTIONS & ANSWERS 2026/2027
Question 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. Pharmacokinetics
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.
Question 2
The study of what the drug does to the body is called:
A. Pharmacokinetics
B. Pharmacodynamics
C. Toxicology
D. Pharmacogenetics
Correct Answer: B. Pharmacodynamics
Rationale: Pharmacodynamics focuses on the biochemical and physiologic effects of
drugs and their mechanisms of action, including receptor binding and signal
transduction.
,Question 3
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. Xenobiotics
Rationale: Xenobiotics are chemical substances that are not naturally produced by the
body. Medications are a common example of xenobiotics.
Question 4
Which of the following factors affects drug absorption?
A. Rate of dissolution
B. Surface area available for absorption
C. Blood flow to the absorption site
D. All of the above
Correct Answer: D. All of the above
Rationale: All listed factors influence how quickly and completely a drug enters the
bloodstream. Additional factors include pH partitioning and the presence of
transporters.
Question 5
Which of the following factors affects drug distribution?
A. Blood flow to tissues
B. Ability to exit the vascular system
C. Blood-brain barrier
D. All of the above
,Correct Answer: D. All of the above
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.
Question 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. Cytochrome P450 (CYP450)
Rationale: CYP450 enzymes are responsible for phase I metabolism (oxidation,
reduction, hydrolysis) of many drugs and endogenous substances. Most drug
metabolism takes place in the liver.
Question 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. Phase I
Rationale: Phase I metabolism, primarily mediated by CYP450 enzymes, introduces or
exposes functional groups through oxidation, reduction, or hydrolysis. Phase II involves
conjugation reactions.
, Question 8
Which of the following are possible outcomes of Phase I drug metabolism?
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. All of the above
Correct Answer: D. All of the above
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.
Question 9
Medications that increase the rate of another drug's metabolism by elevating
CYP450 enzyme activity are called:
A. CYP450 inhibitors
B. CYP450 inducers
C. CYP450 substrates
D. CYP450 agonists
Correct Answer: B. CYP450 inducers
Rationale: CYP450 inducers increase the rate of another drug's metabolism by elevating
CYP450 enzyme activity, thereby decreasing the concentration of the "parent drug."
Question 10
Which of the following are CYP450 inducers?
A. Carbamazepine
B. Rifampin
C. Phenytoin
D. All of the above
ADVANCED PHARMACOLOGY PRACTICE
QUESTIONS & ANSWERS 2026/2027
Question 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. Pharmacokinetics
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.
Question 2
The study of what the drug does to the body is called:
A. Pharmacokinetics
B. Pharmacodynamics
C. Toxicology
D. Pharmacogenetics
Correct Answer: B. Pharmacodynamics
Rationale: Pharmacodynamics focuses on the biochemical and physiologic effects of
drugs and their mechanisms of action, including receptor binding and signal
transduction.
,Question 3
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. Xenobiotics
Rationale: Xenobiotics are chemical substances that are not naturally produced by the
body. Medications are a common example of xenobiotics.
Question 4
Which of the following factors affects drug absorption?
A. Rate of dissolution
B. Surface area available for absorption
C. Blood flow to the absorption site
D. All of the above
Correct Answer: D. All of the above
Rationale: All listed factors influence how quickly and completely a drug enters the
bloodstream. Additional factors include pH partitioning and the presence of
transporters.
Question 5
Which of the following factors affects drug distribution?
A. Blood flow to tissues
B. Ability to exit the vascular system
C. Blood-brain barrier
D. All of the above
,Correct Answer: D. All of the above
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.
Question 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. Cytochrome P450 (CYP450)
Rationale: CYP450 enzymes are responsible for phase I metabolism (oxidation,
reduction, hydrolysis) of many drugs and endogenous substances. Most drug
metabolism takes place in the liver.
Question 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. Phase I
Rationale: Phase I metabolism, primarily mediated by CYP450 enzymes, introduces or
exposes functional groups through oxidation, reduction, or hydrolysis. Phase II involves
conjugation reactions.
, Question 8
Which of the following are possible outcomes of Phase I drug metabolism?
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. All of the above
Correct Answer: D. All of the above
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.
Question 9
Medications that increase the rate of another drug's metabolism by elevating
CYP450 enzyme activity are called:
A. CYP450 inhibitors
B. CYP450 inducers
C. CYP450 substrates
D. CYP450 agonists
Correct Answer: B. CYP450 inducers
Rationale: CYP450 inducers increase the rate of another drug's metabolism by elevating
CYP450 enzyme activity, thereby decreasing the concentration of the "parent drug."
Question 10
Which of the following are CYP450 inducers?
A. Carbamazepine
B. Rifampin
C. Phenytoin
D. All of the above
