, NU 150 Exam 1 – Pharmacology (2026) |
Galen College of Nursing | Complete Exam
Questions & Verified Answers with
Detailed Rationales | Latest Study Guide |
A+ Graded
Q1. Pharmacology is best defined as the study of:
A) The human body's structure and function
B) Drugs and their interactions with living systems
C) The art of preparing and dispensing medications
D) Poisons and their antidotes only
Correct Answer: B. Drugs and their interactions with
living systems
Rationale: Pharmacology is the broad scientific discipline
that examines how drugs affect biological systems and
how the body responds to drugs. This encompasses
everything from the drug's mechanism of action to its
therapeutic and adverse effects.
,Q2. A drug that binds to a receptor and produces a
therapeutic response is known as a(n):
A) Antagonist
B) Agonist
C) Partial antagonist
D) Placebo
Correct Answer: B. Agonist
Rationale: An agonist has both affinity for a receptor and
intrinsic efficacy, meaning it binds to the receptor and
activates it to produce a response. An antagonist also
binds to the receptor (affinity) but does not activate it,
instead blocking the action of agonists.
Q3. A drug that binds to a receptor and blocks the action
of an agonist is known as a(n):
A) Agonist
B) Partial agonist
C) Antagonist
D) Enzyme inhibitor
, Correct Answer: C. Antagonist
Rationale: An antagonist joins with receptors to prevent
or block the action of the agonist. Example: Naloxone
(Narcan) is an antagonist that blocks the effect of
morphine or heroin, used to reverse opioid overdose.
Q4. Which term describes what the body does to a drug,
encompassing the processes of absorption, distribution,
metabolism, and excretion?
A) Pharmacodynamics
B) Pharmacotherapeutics
C) Pharmacokinetics
D) Toxicology
Correct Answer: C. Pharmacokinetics
Rationale: Pharmacokinetics is the study of drug
movement through the body, involving four key
processes: absorption, distribution, metabolism, and
Galen College of Nursing | Complete Exam
Questions & Verified Answers with
Detailed Rationales | Latest Study Guide |
A+ Graded
Q1. Pharmacology is best defined as the study of:
A) The human body's structure and function
B) Drugs and their interactions with living systems
C) The art of preparing and dispensing medications
D) Poisons and their antidotes only
Correct Answer: B. Drugs and their interactions with
living systems
Rationale: Pharmacology is the broad scientific discipline
that examines how drugs affect biological systems and
how the body responds to drugs. This encompasses
everything from the drug's mechanism of action to its
therapeutic and adverse effects.
,Q2. A drug that binds to a receptor and produces a
therapeutic response is known as a(n):
A) Antagonist
B) Agonist
C) Partial antagonist
D) Placebo
Correct Answer: B. Agonist
Rationale: An agonist has both affinity for a receptor and
intrinsic efficacy, meaning it binds to the receptor and
activates it to produce a response. An antagonist also
binds to the receptor (affinity) but does not activate it,
instead blocking the action of agonists.
Q3. A drug that binds to a receptor and blocks the action
of an agonist is known as a(n):
A) Agonist
B) Partial agonist
C) Antagonist
D) Enzyme inhibitor
, Correct Answer: C. Antagonist
Rationale: An antagonist joins with receptors to prevent
or block the action of the agonist. Example: Naloxone
(Narcan) is an antagonist that blocks the effect of
morphine or heroin, used to reverse opioid overdose.
Q4. Which term describes what the body does to a drug,
encompassing the processes of absorption, distribution,
metabolism, and excretion?
A) Pharmacodynamics
B) Pharmacotherapeutics
C) Pharmacokinetics
D) Toxicology
Correct Answer: C. Pharmacokinetics
Rationale: Pharmacokinetics is the study of drug
movement through the body, involving four key
processes: absorption, distribution, metabolism, and
