NSG 552 Exam 1 Practice Questions
Wilkes University Psychopharmacology
Latest 2025/2026 Updates
SECTION 1: PHARMACOKINETICS AND PHARMACODYNAMICS
Question 1
A nursing student asks the preceptor to explain the primary difference
between pharmacokinetics and pharmacodynamics. Which response is
most accurate?
A) "Pharmacokinetics is the effect of the drug on the body;
pharmacodynamics is what the body does to the drug."
B) "Pharmacokinetics is what the body does to the drug;
pharmacodynamics is the effect of the drug on the body."
C) "Pharmacokinetics involves receptor binding; pharmacodynamics
involves drug absorption."
D) "There is no significant difference between the two terms."
Answer: B
Rationale: Pharmacokinetics describes what the body does to the
drug (Absorption, Distribution, Metabolism, Excretion).
,Pharmacodynamics describes what the drug does to the body
(receptor binding, mechanism of action, clinical effect) .
Question 2
A patient with depression asks, "My doctor said my medication increases
serotonin. How does that work?" The PMHNP correctly explains that
after a neurotransmitter is released into the synapse, it can be taken back
into the presynaptic neuron through a process known as:
A) Upregulation
B) Depolarization
C) Reuptake
D) Catabolism
Answer: C
Rationale: Reuptake is the process by which neurotransmitters are
transported back into the presynaptic neuron from the synaptic cleft,
terminating their effect. SSRIs block this specific process to increase
synaptic serotonin levels .
Question 3
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
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 .
Question 4
The term "half-life" (t½) of a medication refers to:
A) The time it takes for the drug to reach peak serum concentration
B) The time it takes for the drug concentration to decrease by 50%
C) The total time the drug remains detectable in urine
D) The time required for the drug to bind to its receptor
Answer: B
Rationale: Half-life is the time required for the serum concentration
of a drug to fall by 50%. It determines dosing frequency (typically 4-
5 half-lives to reach steady state) and the time to elimination .
, Question 5
A patient who has been taking a psychotropic medication for 6 months
reports that it "stopped working." The nurse suspects pharmacokinetic
tolerance. Which explanation is most accurate?
A) The patient's receptors have downregulated
B) The patient's body has increased the rate of drug metabolism
C) The patient has developed a psychological dependence
D) The medication has lost its affinity for the target receptor
Answer: B
Rationale: Pharmacokinetic tolerance (also called metabolic
tolerance) occurs when the body becomes more efficient at
metabolizing or eliminating a drug over time, leading to lower
serum levels and reduced efficacy .
Question 6
A patient is started on a new medication that is 95% protein-bound.
Which statement by the patient indicates understanding?
A) "Most of my medication is active and available to work right away."
B) "Only a small amount of my medication is free and active; the rest is
stored."
C) "I should take this medication on an empty stomach for best
Wilkes University Psychopharmacology
Latest 2025/2026 Updates
SECTION 1: PHARMACOKINETICS AND PHARMACODYNAMICS
Question 1
A nursing student asks the preceptor to explain the primary difference
between pharmacokinetics and pharmacodynamics. Which response is
most accurate?
A) "Pharmacokinetics is the effect of the drug on the body;
pharmacodynamics is what the body does to the drug."
B) "Pharmacokinetics is what the body does to the drug;
pharmacodynamics is the effect of the drug on the body."
C) "Pharmacokinetics involves receptor binding; pharmacodynamics
involves drug absorption."
D) "There is no significant difference between the two terms."
Answer: B
Rationale: Pharmacokinetics describes what the body does to the
drug (Absorption, Distribution, Metabolism, Excretion).
,Pharmacodynamics describes what the drug does to the body
(receptor binding, mechanism of action, clinical effect) .
Question 2
A patient with depression asks, "My doctor said my medication increases
serotonin. How does that work?" The PMHNP correctly explains that
after a neurotransmitter is released into the synapse, it can be taken back
into the presynaptic neuron through a process known as:
A) Upregulation
B) Depolarization
C) Reuptake
D) Catabolism
Answer: C
Rationale: Reuptake is the process by which neurotransmitters are
transported back into the presynaptic neuron from the synaptic cleft,
terminating their effect. SSRIs block this specific process to increase
synaptic serotonin levels .
Question 3
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
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 .
Question 4
The term "half-life" (t½) of a medication refers to:
A) The time it takes for the drug to reach peak serum concentration
B) The time it takes for the drug concentration to decrease by 50%
C) The total time the drug remains detectable in urine
D) The time required for the drug to bind to its receptor
Answer: B
Rationale: Half-life is the time required for the serum concentration
of a drug to fall by 50%. It determines dosing frequency (typically 4-
5 half-lives to reach steady state) and the time to elimination .
, Question 5
A patient who has been taking a psychotropic medication for 6 months
reports that it "stopped working." The nurse suspects pharmacokinetic
tolerance. Which explanation is most accurate?
A) The patient's receptors have downregulated
B) The patient's body has increased the rate of drug metabolism
C) The patient has developed a psychological dependence
D) The medication has lost its affinity for the target receptor
Answer: B
Rationale: Pharmacokinetic tolerance (also called metabolic
tolerance) occurs when the body becomes more efficient at
metabolizing or eliminating a drug over time, leading to lower
serum levels and reduced efficacy .
Question 6
A patient is started on a new medication that is 95% protein-bound.
Which statement by the patient indicates understanding?
A) "Most of my medication is active and available to work right away."
B) "Only a small amount of my medication is free and active; the rest is
stored."
C) "I should take this medication on an empty stomach for best
