PHARMACOLOGY 230 LATEST
FINAL EXAM REAL 2025/2026:
100Complete and Answers
EXAM
---
**Question 1**
What is the study of how drugs enter the body, reach their site of
action, are metabolized, and exit the body called?
A) Pharmacodynamics
B) Pharmacokinetics
C) Pharmacotherapeutics
D) Pharmacognosy
**Answer: B**
**Rationale:** Pharmacokinetics describes the movement of drugs
through the body, including absorption, distribution, metabolism, and
excretion (ADME). Pharmacodynamics (A) is the study of what drugs do
to the body and their mechanisms of action .
,---
**Question 2**
A nurse is teaching a patient about enteric-coated medications. Which
statement by the patient indicates understanding?
A) "I can crush the tablet for easier swallowing."
B) "The coating protects my stomach from irritation."
C) "It will work faster than a regular tablet."
D) "The coating dissolves in my mouth."
**Answer: B**
**Rationale:** Enteric coatings protect the drug from stomach acid,
preventing gastric irritation and delaying release until the small
intestine. Crushing destroys this protection and may cause the drug to
be released too early .
---
**Question 3**
A patient is prescribed a drug with a half-life of 4 hours. How long will it
take for the drug to reach a steady state?
,A) 8 hours
B) 12 hours
C) 20 hours
D) 24 hours
**Answer: C**
**Rationale:** Steady state is reached after approximately 4-5 half-
lives. 5 × 4 hours = 20 hours. This is the time required for drug
accumulation to reach equilibrium between administration and
elimination .
---
**Question 4**
The nurse administers naloxone (Narcan) to a patient with opioid
overdose. This is an example of:
A) Agonist
B) Antagonist
C) Partial agonist
D) Synergistic effect
, **Answer: B**
**Rationale:** Naloxone is a competitive antagonist that binds to
opioid receptors without activating them, reversing opioid effects.
Antagonists block receptor activation and prevent the action of
agonists .
---
**Question 5**
The cytochrome P450 enzyme system is primarily involved in:
A) Drug absorption in the GI tract
B) Drug distribution to tissues
C) Drug metabolism in the liver
D) Drug excretion by the kidneys
**Answer: C**
**Rationale:** CYP450 enzymes (especially in the liver) metabolize
many drugs. Inducers or inhibitors can cause significant drug
interactions. The CYP450 system is responsible for Phase I metabolism
of numerous medications .
FINAL EXAM REAL 2025/2026:
100Complete and Answers
EXAM
---
**Question 1**
What is the study of how drugs enter the body, reach their site of
action, are metabolized, and exit the body called?
A) Pharmacodynamics
B) Pharmacokinetics
C) Pharmacotherapeutics
D) Pharmacognosy
**Answer: B**
**Rationale:** Pharmacokinetics describes the movement of drugs
through the body, including absorption, distribution, metabolism, and
excretion (ADME). Pharmacodynamics (A) is the study of what drugs do
to the body and their mechanisms of action .
,---
**Question 2**
A nurse is teaching a patient about enteric-coated medications. Which
statement by the patient indicates understanding?
A) "I can crush the tablet for easier swallowing."
B) "The coating protects my stomach from irritation."
C) "It will work faster than a regular tablet."
D) "The coating dissolves in my mouth."
**Answer: B**
**Rationale:** Enteric coatings protect the drug from stomach acid,
preventing gastric irritation and delaying release until the small
intestine. Crushing destroys this protection and may cause the drug to
be released too early .
---
**Question 3**
A patient is prescribed a drug with a half-life of 4 hours. How long will it
take for the drug to reach a steady state?
,A) 8 hours
B) 12 hours
C) 20 hours
D) 24 hours
**Answer: C**
**Rationale:** Steady state is reached after approximately 4-5 half-
lives. 5 × 4 hours = 20 hours. This is the time required for drug
accumulation to reach equilibrium between administration and
elimination .
---
**Question 4**
The nurse administers naloxone (Narcan) to a patient with opioid
overdose. This is an example of:
A) Agonist
B) Antagonist
C) Partial agonist
D) Synergistic effect
, **Answer: B**
**Rationale:** Naloxone is a competitive antagonist that binds to
opioid receptors without activating them, reversing opioid effects.
Antagonists block receptor activation and prevent the action of
agonists .
---
**Question 5**
The cytochrome P450 enzyme system is primarily involved in:
A) Drug absorption in the GI tract
B) Drug distribution to tissues
C) Drug metabolism in the liver
D) Drug excretion by the kidneys
**Answer: C**
**Rationale:** CYP450 enzymes (especially in the liver) metabolize
many drugs. Inducers or inhibitors can cause significant drug
interactions. The CYP450 system is responsible for Phase I metabolism
of numerous medications .
