NSG 552 Final Exam 2026 | Verified
Questions and Answers plus
Rationales Academic Year 2026/27
Instant Pdf Download
SECTION 1: PHARMACOKINETICS & PHARMACODYNAMICS
(Questions 1-10)
QUESTION 1
What is the study of what the body does to drugs?
A) Pharmacodynamics
B) Pharmacokinetics
C) Pharmacotherapeutics
D) Pharmacogenomics
Answer: B) Pharmacokinetics
Rationale: Pharmacokinetics encompasses the full scope of how
drugs are absorbed into the bloodstream, distributed throughout the
body, metabolized by enzymatic activity (often in the liver), and
excreted, primarily by the kidneys. Pharmacodynamics is what the
drug does to the body. This is a foundational concept in
psychopharmacology .
QUESTION 2
What is the study of what the drug does to the body?
,A) Pharmacodynamics
B) Pharmacokinetics
C) Pharmacotherapeutics
D) Pharmacogenomics
Answer: A) Pharmacodynamics
Rationale: Pharmacodynamics examines the biochemical,
physiological, and molecular effects of drugs on the body. It
investigates how medications interact with receptors, alter
neurotransmitter systems, and ultimately produce therapeutic or
adverse effects. Understanding pharmacodynamics is vital to
selecting appropriate medications that effectively target specific
symptoms .
QUESTION 3
The process of becoming desensitized and less responsive to a particular
medication dose over time, necessitating an increase, is called:
A) Upregulation
B) Drug tolerance/desensitization
C) Downregulation
D) Receptor antagonism
Answer: B) Drug tolerance/desensitization
Rationale: Drug tolerance occurs when the body becomes less
responsive to a medication over time, requiring higher doses to
achieve the same therapeutic effect. This is often due to receptor
downregulation or desensitization. Tolerance is a common
phenomenon with many psychotropic medications .
QUESTION 4
,A ratio describing the toxic dose to the effective dose is known as:
A) Half-life
B) Bioavailability
C) Therapeutic index
D) Affinity
Answer: C) Therapeutic index
Rationale: The therapeutic index is a ratio that compares the dose of
a drug that produces toxicity (TD50) to the dose that produces the
desired therapeutic effect (ED50). A narrow therapeutic index (e.g.,
lithium, digoxin) means there is a small margin between effective
and toxic doses, requiring careful monitoring .
QUESTION 5
Which statement best describes drug "affinity"?
A) The maximum effect a drug can produce
B) The extent to which a drug binds to receptors at a given concentration
C) The dose required to produce 50% of maximum effect
D) The speed at which a drug is metabolized
Answer: B) The extent to which a drug binds to receptors at a given
concentration
Rationale: Affinity refers to how strongly a drug binds to its
receptor. Higher affinity means the drug binds more readily and can
produce effects at lower concentrations. This is a key concept in
pharmacodynamics .
QUESTION 6
, A chemical that binds to a receptor to produce a biologic response is
called:
A) Antagonist
B) Partial agonist
C) Agonist
D) Inverse agonist
Answer: C) Agonist
Rationale: An agonist binds to a receptor and activates it, producing
a biologic response. A full agonist produces maximal activation.
Antagonists bind to receptors but block activation; partial agonists
produce a submaximal response even when all receptors are
occupied .
QUESTION 7
A chemical that binds to a receptor but does not fully activate the
receptor is called:
A) Antagonist
B) Partial agonist
C) Agonist
D) Inverse agonist
Answer: B) Partial agonist
Rationale: A partial agonist binds to a receptor but produces only a
submaximal response, even when all receptors are occupied.
Aripiprazole is a classic example of a partial D2 agonist in
psychopharmacology .
QUESTION 8
Questions and Answers plus
Rationales Academic Year 2026/27
Instant Pdf Download
SECTION 1: PHARMACOKINETICS & PHARMACODYNAMICS
(Questions 1-10)
QUESTION 1
What is the study of what the body does to drugs?
A) Pharmacodynamics
B) Pharmacokinetics
C) Pharmacotherapeutics
D) Pharmacogenomics
Answer: B) Pharmacokinetics
Rationale: Pharmacokinetics encompasses the full scope of how
drugs are absorbed into the bloodstream, distributed throughout the
body, metabolized by enzymatic activity (often in the liver), and
excreted, primarily by the kidneys. Pharmacodynamics is what the
drug does to the body. This is a foundational concept in
psychopharmacology .
QUESTION 2
What is the study of what the drug does to the body?
,A) Pharmacodynamics
B) Pharmacokinetics
C) Pharmacotherapeutics
D) Pharmacogenomics
Answer: A) Pharmacodynamics
Rationale: Pharmacodynamics examines the biochemical,
physiological, and molecular effects of drugs on the body. It
investigates how medications interact with receptors, alter
neurotransmitter systems, and ultimately produce therapeutic or
adverse effects. Understanding pharmacodynamics is vital to
selecting appropriate medications that effectively target specific
symptoms .
QUESTION 3
The process of becoming desensitized and less responsive to a particular
medication dose over time, necessitating an increase, is called:
A) Upregulation
B) Drug tolerance/desensitization
C) Downregulation
D) Receptor antagonism
Answer: B) Drug tolerance/desensitization
Rationale: Drug tolerance occurs when the body becomes less
responsive to a medication over time, requiring higher doses to
achieve the same therapeutic effect. This is often due to receptor
downregulation or desensitization. Tolerance is a common
phenomenon with many psychotropic medications .
QUESTION 4
,A ratio describing the toxic dose to the effective dose is known as:
A) Half-life
B) Bioavailability
C) Therapeutic index
D) Affinity
Answer: C) Therapeutic index
Rationale: The therapeutic index is a ratio that compares the dose of
a drug that produces toxicity (TD50) to the dose that produces the
desired therapeutic effect (ED50). A narrow therapeutic index (e.g.,
lithium, digoxin) means there is a small margin between effective
and toxic doses, requiring careful monitoring .
QUESTION 5
Which statement best describes drug "affinity"?
A) The maximum effect a drug can produce
B) The extent to which a drug binds to receptors at a given concentration
C) The dose required to produce 50% of maximum effect
D) The speed at which a drug is metabolized
Answer: B) The extent to which a drug binds to receptors at a given
concentration
Rationale: Affinity refers to how strongly a drug binds to its
receptor. Higher affinity means the drug binds more readily and can
produce effects at lower concentrations. This is a key concept in
pharmacodynamics .
QUESTION 6
, A chemical that binds to a receptor to produce a biologic response is
called:
A) Antagonist
B) Partial agonist
C) Agonist
D) Inverse agonist
Answer: C) Agonist
Rationale: An agonist binds to a receptor and activates it, producing
a biologic response. A full agonist produces maximal activation.
Antagonists bind to receptors but block activation; partial agonists
produce a submaximal response even when all receptors are
occupied .
QUESTION 7
A chemical that binds to a receptor but does not fully activate the
receptor is called:
A) Antagonist
B) Partial agonist
C) Agonist
D) Inverse agonist
Answer: B) Partial agonist
Rationale: A partial agonist binds to a receptor but produces only a
submaximal response, even when all receptors are occupied.
Aripiprazole is a classic example of a partial D2 agonist in
psychopharmacology .
QUESTION 8
