NURS 251 Module 1 Exam V2 | NURS 251
Module 1 Exam – Pharmacology | Portage |
Q&A with Rationale (Portage NURS 251
Module 1 Exam)
1. Which of the following describes the study of what the body does to a drug?
A. Pharmacokinetics
B. Pharmacodynamics
C. Pharmacotherapeutics
D. Pharmacognosy
Answer: A
Rationale: Pharmacokinetics is the study of drug movement throughout the body,
including absorption, distribution, metabolism, and excretion. It describes how the body
processes the medication over time. In contrast, pharmacodynamics focuses on what the
drug does to the body through biochemical and physiological effects.
2. The term ‘First-Pass Effect’ refers to which process in pharmacokinetics?
A. The excretion of drugs by the kidneys
B. The absorption of drugs through the skin
C. The binding of a drug to plasma proteins
D. The metabolism of a drug by the liver before it reaches systemic circulation
,Answer: D
Rationale: The first-pass effect occurs when an oral drug is metabolized by the liver before
reaching the systemic circulation, often significantly reducing its bioavailability. This
phenomenon explains why some drugs require much higher oral doses compared to
intravenous doses. It is a critical consideration when determining the appropriate route of
administration for specific medications.
3. A drug that binds to a receptor and produces a maximal biological response is known as
a(n):
A. Antagonist
B. Partial Agonist
C. Competitive inhibitor
D. Agonist
Answer: D
Rationale: An agonist is a molecule that binds to a receptor and activates it to produce a
biological response. This response mimics the effect of endogenous ligands that normally
bind to that receptor. Understanding the difference between agonists and antagonists is
fundamental to predicting drug effects on the body.
4. Which drug name is official, non-proprietary, and typically written in lowercase?
A. Trade name
B. Chemical name
, C. Generic name
D. Brand name
Answer: C
Rationale: The generic name is the official name assigned by the United States Adopted
Names (USAN) Council and is not owned by any specific company. It is used internationally
to identify the active ingredient regardless of the manufacturer. Using generic names helps
prevent medication errors that can occur when different brand names are used for the
same drug.
5. What is the primary site of drug metabolism in the human body?
A. Kidneys
B. Small Intestine
C. Liver
D. Lungs
Answer: C
Rationale: The liver is the primary organ responsible for the metabolism of drugs, utilizing
the cytochrome P450 enzyme system. Metabolism transforms drugs into more water-
soluble metabolites to facilitate excretion. Dysfunction in the liver can lead to drug toxicity
due to slowed metabolic rates.
Module 1 Exam – Pharmacology | Portage |
Q&A with Rationale (Portage NURS 251
Module 1 Exam)
1. Which of the following describes the study of what the body does to a drug?
A. Pharmacokinetics
B. Pharmacodynamics
C. Pharmacotherapeutics
D. Pharmacognosy
Answer: A
Rationale: Pharmacokinetics is the study of drug movement throughout the body,
including absorption, distribution, metabolism, and excretion. It describes how the body
processes the medication over time. In contrast, pharmacodynamics focuses on what the
drug does to the body through biochemical and physiological effects.
2. The term ‘First-Pass Effect’ refers to which process in pharmacokinetics?
A. The excretion of drugs by the kidneys
B. The absorption of drugs through the skin
C. The binding of a drug to plasma proteins
D. The metabolism of a drug by the liver before it reaches systemic circulation
,Answer: D
Rationale: The first-pass effect occurs when an oral drug is metabolized by the liver before
reaching the systemic circulation, often significantly reducing its bioavailability. This
phenomenon explains why some drugs require much higher oral doses compared to
intravenous doses. It is a critical consideration when determining the appropriate route of
administration for specific medications.
3. A drug that binds to a receptor and produces a maximal biological response is known as
a(n):
A. Antagonist
B. Partial Agonist
C. Competitive inhibitor
D. Agonist
Answer: D
Rationale: An agonist is a molecule that binds to a receptor and activates it to produce a
biological response. This response mimics the effect of endogenous ligands that normally
bind to that receptor. Understanding the difference between agonists and antagonists is
fundamental to predicting drug effects on the body.
4. Which drug name is official, non-proprietary, and typically written in lowercase?
A. Trade name
B. Chemical name
, C. Generic name
D. Brand name
Answer: C
Rationale: The generic name is the official name assigned by the United States Adopted
Names (USAN) Council and is not owned by any specific company. It is used internationally
to identify the active ingredient regardless of the manufacturer. Using generic names helps
prevent medication errors that can occur when different brand names are used for the
same drug.
5. What is the primary site of drug metabolism in the human body?
A. Kidneys
B. Small Intestine
C. Liver
D. Lungs
Answer: C
Rationale: The liver is the primary organ responsible for the metabolism of drugs, utilizing
the cytochrome P450 enzyme system. Metabolism transforms drugs into more water-
soluble metabolites to facilitate excretion. Dysfunction in the liver can lead to drug toxicity
due to slowed metabolic rates.
