NR546 Week 1 Practice Exam 2 Questions and
Answers with Rationales Latest Versions Top
Rated A+
1. Which statement best defines pharmacology?
A. The study of only adverse drug reactions
B. The study of drugs and their effects on living organisms
C. The study of disease pathology only
D. The study of surgical procedures
Answer: B
Rationale: Pharmacology is the science concerned with drugs, including
their sources, properties, mechanisms of action, therapeutic uses,
adverse effects, and interactions.
2. Pharmacokinetics is best summarized as:
A. What the drug does to the body
B. What the body does to the drug
C. How receptors produce disease
D. How diseases alter vital signs
Answer: B
Rationale: Pharmacokinetics describes the movement of drugs through
the body: absorption, distribution, metabolism, and excretion
(ADME).
,3. Pharmacodynamics primarily examines:
A. Drug absorption
B. Drug elimination
C. Drug effects on the body
D. Drug storage
Answer: C
Rationale: Pharmacodynamics concerns the biochemical and
physiologic effects of drugs, including receptor interactions and dose-
response relationships.
4. Which sequence correctly represents the four major
pharmacokinetic processes?
A. Distribution, absorption, excretion, metabolism
B. Absorption, distribution, metabolism, excretion
C. Metabolism, absorption, distribution, excretion
D. Excretion, metabolism, absorption, distribution
Answer: B
Rationale: The classic pharmacokinetic sequence is ADME:
absorption → distribution → metabolism → excretion.
5. A medication is administered directly into the bloodstream.
Which pharmacokinetic process is bypassed?
A. Distribution
B. Metabolism
C. Absorption
D. Excretion
,Answer: C
Rationale: IV administration places the medication directly into
systemic circulation, so the conventional absorption phase is bypassed.
6. Which route generally provides the most rapid systemic
availability?
A. Oral
B. Intravenous
C. Subcutaneous
D. Transdermal
Answer: B
Rationale: IV administration delivers the medication directly into the
bloodstream and therefore provides rapid systemic availability.
7. What is bioavailability?
A. The amount of medication excreted in urine
B. The fraction of an administered dose that reaches systemic circulation
C. The time needed to eliminate the drug
D. The drug's receptor affinity
Answer: B
Rationale: Bioavailability represents the fraction of an administered
dose that reaches systemic circulation in an active form.
8. Which route typically has the greatest potential for first-pass
hepatic metabolism?
, A. Intravenous
B. Sublingual
C. Oral
D. Transdermal
Answer: C
Rationale: Oral medications are absorbed through the GI tract and enter
portal circulation before reaching systemic circulation, exposing them to
first-pass metabolism.
9. Which medication characteristic generally facilitates membrane
penetration?
A. Lipid solubility
B. Permanent ionization
C. Extensive protein binding
D. Very large molecular size
Answer: A
Rationale: Lipid-soluble, nonionized molecules generally cross lipid
membranes more readily.
10. Which drug form generally crosses biologic membranes most
easily?
A. Ionized
B. Nonionized
C. Protein-bound
D. Highly polar
Answer: B
Answers with Rationales Latest Versions Top
Rated A+
1. Which statement best defines pharmacology?
A. The study of only adverse drug reactions
B. The study of drugs and their effects on living organisms
C. The study of disease pathology only
D. The study of surgical procedures
Answer: B
Rationale: Pharmacology is the science concerned with drugs, including
their sources, properties, mechanisms of action, therapeutic uses,
adverse effects, and interactions.
2. Pharmacokinetics is best summarized as:
A. What the drug does to the body
B. What the body does to the drug
C. How receptors produce disease
D. How diseases alter vital signs
Answer: B
Rationale: Pharmacokinetics describes the movement of drugs through
the body: absorption, distribution, metabolism, and excretion
(ADME).
,3. Pharmacodynamics primarily examines:
A. Drug absorption
B. Drug elimination
C. Drug effects on the body
D. Drug storage
Answer: C
Rationale: Pharmacodynamics concerns the biochemical and
physiologic effects of drugs, including receptor interactions and dose-
response relationships.
4. Which sequence correctly represents the four major
pharmacokinetic processes?
A. Distribution, absorption, excretion, metabolism
B. Absorption, distribution, metabolism, excretion
C. Metabolism, absorption, distribution, excretion
D. Excretion, metabolism, absorption, distribution
Answer: B
Rationale: The classic pharmacokinetic sequence is ADME:
absorption → distribution → metabolism → excretion.
5. A medication is administered directly into the bloodstream.
Which pharmacokinetic process is bypassed?
A. Distribution
B. Metabolism
C. Absorption
D. Excretion
,Answer: C
Rationale: IV administration places the medication directly into
systemic circulation, so the conventional absorption phase is bypassed.
6. Which route generally provides the most rapid systemic
availability?
A. Oral
B. Intravenous
C. Subcutaneous
D. Transdermal
Answer: B
Rationale: IV administration delivers the medication directly into the
bloodstream and therefore provides rapid systemic availability.
7. What is bioavailability?
A. The amount of medication excreted in urine
B. The fraction of an administered dose that reaches systemic circulation
C. The time needed to eliminate the drug
D. The drug's receptor affinity
Answer: B
Rationale: Bioavailability represents the fraction of an administered
dose that reaches systemic circulation in an active form.
8. Which route typically has the greatest potential for first-pass
hepatic metabolism?
, A. Intravenous
B. Sublingual
C. Oral
D. Transdermal
Answer: C
Rationale: Oral medications are absorbed through the GI tract and enter
portal circulation before reaching systemic circulation, exposing them to
first-pass metabolism.
9. Which medication characteristic generally facilitates membrane
penetration?
A. Lipid solubility
B. Permanent ionization
C. Extensive protein binding
D. Very large molecular size
Answer: A
Rationale: Lipid-soluble, nonionized molecules generally cross lipid
membranes more readily.
10. Which drug form generally crosses biologic membranes most
easily?
A. Ionized
B. Nonionized
C. Protein-bound
D. Highly polar
Answer: B
