NU 578 Units 1–5 Exam (2026/2027) (PDF) |
Advanced Nursing | University of South Alabama
Question 1. A graduate nursing student is asked to define pharmacology. Which
statement best describes the scope of this discipline?
A. The study of how the body absorbs and eliminates medications
B. The study of drugs and their interactions with living organisms
C. The study of adverse effects caused by therapeutic agents
D. The study of drug receptor binding and signal transduction
Correct Answer: B
Rationale: Pharmacology is the broad study of drugs and their interactions with living
organisms, encompassing all aspects including absorption, distribution, metabolism,
excretion, mechanisms of action, therapeutic effects, and adverse effects .
Question 2. Which statement best describes the primary goal of drug therapy?
A. To eliminate all symptoms associated with a disease process
B. To provide maximum therapeutic benefit while minimizing harm
C. To achieve the lowest possible drug concentration in the bloodstream
D. To select the least expensive medication available for treatment
Correct Answer: B
Rationale: The primary goal of drug therapy is to achieve maximum therapeutic benefit
while minimizing the risk of harm to the patient . This involves balancing efficacy, safety,
and patient-centered outcomes.
Question 3. A drug produces its desired therapeutic effect without affecting other body
systems. Which property of an ideal drug does this best describe?
,A. Safety
B. Effectiveness
C. Selectivity
D. Reversibility
Correct Answer: C
Rationale: Selectivity refers to a drug's ability to produce its desired effect by targeting
specific receptors or tissues without affecting unintended systems . An ideal drug acts
only on the target site. A drug may be effective and safe but not selective if it causes
unwanted side effects .
Question 4. A prescriber selects a medication that has been on the market for 20 years
with a well-documented safety profile. Which property is being emphasized?
A. The drug causes minimal adverse reactions at therapeutic doses
B. The drug produces the desired therapeutic response in the patient
C. The drug can be administered using a simple once-daily regimen
D. The drug does not interact with other medications the patient takes
Correct Answer: A
Rationale: Safety refers to the drug's low potential for harm. A long-established safety
profile indicates the drug rarely causes serious harm at therapeutic doses . Effectiveness
is the ability to produce the intended therapeutic response; ease of administration
relates to adherence.
Question 5. A drug effectively reduces blood pressure without serious harmful effects
but causes nausea and headache. Which property of an ideal drug is lacking?
A. Effectiveness
B. Safety
C. Selectivity
D. Potency
Correct Answer: C
,Rationale: While the drug is effective and safe, it is not selective because it causes
unwanted side effects (nausea, headache). Selectivity means the drug acts only on the
target site .
Question 6. Which statement most accurately distinguishes pharmacodynamics from
pharmacokinetics?
A. Pharmacodynamics describes what the body does to the drug
B. Pharmacokinetics describes what the drug does to the body
C. Pharmacodynamics describes what the drug does to the body
D. Pharmacokinetics describes how drugs bind to receptors
Correct Answer: C
Rationale: Pharmacodynamics describes the biochemical and physiological effects of
drugs on the body, including mechanisms of action and dose-response relationships .
Pharmacokinetics describes what the body does to the drug (ADME) .
Question 7. Which pharmacokinetic process is primarily affected by the 'first-pass
effect'?
A. Excretion
B. Distribution
C. Metabolism
D. Absorption
Correct Answer: C
Rationale: The first-pass effect refers to the rapid hepatic metabolism of a drug
absorbed from the GI tract before it reaches systemic circulation . This reduces the
amount of active drug reaching systemic circulation .
, Question 8. A drug that binds to a receptor and produces a maximum response is
known as a:
A. Partial Agonist
B. Full Agonist
C. Competitive Antagonist
D. Inverse Agonist
Correct Answer: B
Rationale: A full agonist binds to a receptor and mimics the endogenous ligand to
produce a maximum biological response . Full agonists have high affinity and high
efficacy, causing a change in cellular function .
Question 9. Which statement accurately describes a partial agonist?
A. It binds to a receptor and produces a maximum response
B. It binds to a receptor and blocks the endogenous ligand
C. It binds to a receptor and produces a submaximal response
D. It has no effect on the receptor
Correct Answer: C
Rationale: Partial agonists have moderate efficacy; their maximum effect is lower than a
full agonist . They can act as both agonists and antagonists depending on the presence
of a full agonist .
Question 10. What effect does grapefruit juice have on drug metabolism?
A. It induces CYP3A4 metabolism, decreasing drug levels
B. It inhibits CYP3A4 metabolism, raising drug blood levels
C. It has no effect on drug metabolism
D. It increases renal excretion of drugs
Correct Answer: B
Advanced Nursing | University of South Alabama
Question 1. A graduate nursing student is asked to define pharmacology. Which
statement best describes the scope of this discipline?
A. The study of how the body absorbs and eliminates medications
B. The study of drugs and their interactions with living organisms
C. The study of adverse effects caused by therapeutic agents
D. The study of drug receptor binding and signal transduction
Correct Answer: B
Rationale: Pharmacology is the broad study of drugs and their interactions with living
organisms, encompassing all aspects including absorption, distribution, metabolism,
excretion, mechanisms of action, therapeutic effects, and adverse effects .
Question 2. Which statement best describes the primary goal of drug therapy?
A. To eliminate all symptoms associated with a disease process
B. To provide maximum therapeutic benefit while minimizing harm
C. To achieve the lowest possible drug concentration in the bloodstream
D. To select the least expensive medication available for treatment
Correct Answer: B
Rationale: The primary goal of drug therapy is to achieve maximum therapeutic benefit
while minimizing the risk of harm to the patient . This involves balancing efficacy, safety,
and patient-centered outcomes.
Question 3. A drug produces its desired therapeutic effect without affecting other body
systems. Which property of an ideal drug does this best describe?
,A. Safety
B. Effectiveness
C. Selectivity
D. Reversibility
Correct Answer: C
Rationale: Selectivity refers to a drug's ability to produce its desired effect by targeting
specific receptors or tissues without affecting unintended systems . An ideal drug acts
only on the target site. A drug may be effective and safe but not selective if it causes
unwanted side effects .
Question 4. A prescriber selects a medication that has been on the market for 20 years
with a well-documented safety profile. Which property is being emphasized?
A. The drug causes minimal adverse reactions at therapeutic doses
B. The drug produces the desired therapeutic response in the patient
C. The drug can be administered using a simple once-daily regimen
D. The drug does not interact with other medications the patient takes
Correct Answer: A
Rationale: Safety refers to the drug's low potential for harm. A long-established safety
profile indicates the drug rarely causes serious harm at therapeutic doses . Effectiveness
is the ability to produce the intended therapeutic response; ease of administration
relates to adherence.
Question 5. A drug effectively reduces blood pressure without serious harmful effects
but causes nausea and headache. Which property of an ideal drug is lacking?
A. Effectiveness
B. Safety
C. Selectivity
D. Potency
Correct Answer: C
,Rationale: While the drug is effective and safe, it is not selective because it causes
unwanted side effects (nausea, headache). Selectivity means the drug acts only on the
target site .
Question 6. Which statement most accurately distinguishes pharmacodynamics from
pharmacokinetics?
A. Pharmacodynamics describes what the body does to the drug
B. Pharmacokinetics describes what the drug does to the body
C. Pharmacodynamics describes what the drug does to the body
D. Pharmacokinetics describes how drugs bind to receptors
Correct Answer: C
Rationale: Pharmacodynamics describes the biochemical and physiological effects of
drugs on the body, including mechanisms of action and dose-response relationships .
Pharmacokinetics describes what the body does to the drug (ADME) .
Question 7. Which pharmacokinetic process is primarily affected by the 'first-pass
effect'?
A. Excretion
B. Distribution
C. Metabolism
D. Absorption
Correct Answer: C
Rationale: The first-pass effect refers to the rapid hepatic metabolism of a drug
absorbed from the GI tract before it reaches systemic circulation . This reduces the
amount of active drug reaching systemic circulation .
, Question 8. A drug that binds to a receptor and produces a maximum response is
known as a:
A. Partial Agonist
B. Full Agonist
C. Competitive Antagonist
D. Inverse Agonist
Correct Answer: B
Rationale: A full agonist binds to a receptor and mimics the endogenous ligand to
produce a maximum biological response . Full agonists have high affinity and high
efficacy, causing a change in cellular function .
Question 9. Which statement accurately describes a partial agonist?
A. It binds to a receptor and produces a maximum response
B. It binds to a receptor and blocks the endogenous ligand
C. It binds to a receptor and produces a submaximal response
D. It has no effect on the receptor
Correct Answer: C
Rationale: Partial agonists have moderate efficacy; their maximum effect is lower than a
full agonist . They can act as both agonists and antagonists depending on the presence
of a full agonist .
Question 10. What effect does grapefruit juice have on drug metabolism?
A. It induces CYP3A4 metabolism, decreasing drug levels
B. It inhibits CYP3A4 metabolism, raising drug blood levels
C. It has no effect on drug metabolism
D. It increases renal excretion of drugs
Correct Answer: B
