Pharmacology 16th Edition
Chapter 1: Introduction to Pharmacology
Question 1: What is the primary mechanism of action of a drug that functions as an
agonist?
A) Inhibits receptor activity
B) Binds to and activates receptors
C) Blocks neurotransmitter reuptake
D) Prevents enzyme degradation
Answer: B) Binds to and activates receptors
Question 2: Pharmacodynamics is the study of:
A) Drug absorption, distribution, metabolism, and excretion.
B) The actions of drugs on the body.
C) The movement of drugs within the body.
D) The safety and efficacy of drugs.
Answer: B) The actions of drugs on the body
Chapter 2: Drug Receptors & Pharmacodynamics
Question 3: A drug that produces a maximal response by occupying a fraction of
receptors is called:
A) Partial agonist
B) Full agonist
C) Antagonist
D) Inverse agonist
Answer: B) Full agonist
Question 4: The dose-response curve is used to illustrate the relationship between:
,A) Drug dose and time of onset
B) Drug dose and the magnitude of its effect
C) Drug concentration and plasma protein binding
D) Drug absorption and excretion rate
Answer: B) Drug dose and the magnitude of its effect
Chapter 3: Pharmacokinetics
Question 5: The process by which a drug is absorbed, distributed, metabolized, and
excreted is known as:
A) Pharmacodynamics
B) Pharmacokinetics
C) Bioavailability
D) Pharmacogenomics
Answer: B) Pharmacokinetics
Question 6: Which of the following routes of administration bypasses the first-pass
metabolism?
A) Oral
B) Sublingual
C) Rectal
D) Intramuscular
Answer: B) Sublingual
Chapter 4: Drug Metabolism
Question 7: The primary organ responsible for drug metabolism is:
A) Kidney
B) Liver
C) Lungs
, D) Small intestine
Answer: B) Liver
Question 8: Phase II reactions in drug metabolism usually involve:
A) Oxidation
B) Reduction
C) Conjugation
D) Hydrolysis
Answer: C) Conjugation
Chapter 5: Pharmacogenomics
Question 9: Pharmacogenomics is the study of how:
A) Environmental factors affect drug action
B) Genetic variation influences drug response
C) Age influences drug metabolism
D) Disease states alter drug efficacy
Answer: B) Genetic variation influences drug response
Question 10: Which of the following is an example of a genetic polymorphism
affecting drug metabolism?
A) CYP2D6 deficiency
B) P-glycoprotein expression
C) Blood-brain barrier permeability
D) Hepatic enzyme induction
Answer: A) CYP2D6 deficiency
Chapter 6: Drug-Drug Interactions
Question 11: A patient taking two drugs that are both metabolized by the same
enzyme may experience: