NSG 5003 WEEK 2 KNOWLEDGE CHECK
QUIZ: ADVANCED PHARMACOLOGY
FUNDAMENTALS. QUESTRIONS WITH
COMPLETE SOLUTION GUARANTEED
SUCCESS.
1. Which term describes the process by which a drug’s concentration is significantly reduced
before it reaches the systemic circulation?
A. Phase II metabolism
B. Bioavailability loss
C. Enterohepatic recycling
D. First-pass effect
Answer: D
Conceptual Explanation: The first-pass effect occurs when a drug is metabolized by the
liver or gut wall after oral administration, reducing the amount of active drug that enters
the blood stream.
2. What happens to the volume of distribution (Vd) of a highly lipophilic drug in an obese
patient?
A. Vd decreases significantly
,B. Vd increases
C. Vd remains unchanged
D. Vd becomes zero
Answer: B
Conceptual Explanation: Lipophilic drugs distribute extensively into adipose tissue;
therefore, an increase in body fat leads to an increased volume of distribution for these
drugs.
3. A drug that binds to a receptor and activates it to produce a maximal response is known as
a:
A. Antagonist
B. Full agonist
C. Inverse agonist
D. Partial agonist
Answer: B
Conceptual Explanation: A full agonist binds to a receptor and mimics the endogenous
ligand to produce a 100% biological response.
4. How many half-lives does it typically take for a drug to reach steady-state concentration in
the body?
A. 4 to 5
, B. 1 to 2
C. 7 to 8
D. 10 to 12
Answer: A
Conceptual Explanation: Steady state, where drug intake equals drug elimination, is
generally achieved after 4 to 5 half-lives of consistent dosing.
5. Which Cytochrome P450 enzyme is responsible for metabolizing approximately 50% of all
clinically used drugs?
A. CYP2D6
B. CYP3A4
C. CYP1A2
D. CYP2C19
Answer: B
Conceptual Explanation: CYP3A4 is the most abundant CYP enzyme in the liver and is
involved in the metabolism of roughly half of all prescribed medications.
6. When a drug is a ‘prodrug,’ what does this imply regarding its metabolism?
A. It is excreted unchanged by the kidneys.
B. It bypasses the liver entirely.
QUIZ: ADVANCED PHARMACOLOGY
FUNDAMENTALS. QUESTRIONS WITH
COMPLETE SOLUTION GUARANTEED
SUCCESS.
1. Which term describes the process by which a drug’s concentration is significantly reduced
before it reaches the systemic circulation?
A. Phase II metabolism
B. Bioavailability loss
C. Enterohepatic recycling
D. First-pass effect
Answer: D
Conceptual Explanation: The first-pass effect occurs when a drug is metabolized by the
liver or gut wall after oral administration, reducing the amount of active drug that enters
the blood stream.
2. What happens to the volume of distribution (Vd) of a highly lipophilic drug in an obese
patient?
A. Vd decreases significantly
,B. Vd increases
C. Vd remains unchanged
D. Vd becomes zero
Answer: B
Conceptual Explanation: Lipophilic drugs distribute extensively into adipose tissue;
therefore, an increase in body fat leads to an increased volume of distribution for these
drugs.
3. A drug that binds to a receptor and activates it to produce a maximal response is known as
a:
A. Antagonist
B. Full agonist
C. Inverse agonist
D. Partial agonist
Answer: B
Conceptual Explanation: A full agonist binds to a receptor and mimics the endogenous
ligand to produce a 100% biological response.
4. How many half-lives does it typically take for a drug to reach steady-state concentration in
the body?
A. 4 to 5
, B. 1 to 2
C. 7 to 8
D. 10 to 12
Answer: A
Conceptual Explanation: Steady state, where drug intake equals drug elimination, is
generally achieved after 4 to 5 half-lives of consistent dosing.
5. Which Cytochrome P450 enzyme is responsible for metabolizing approximately 50% of all
clinically used drugs?
A. CYP2D6
B. CYP3A4
C. CYP1A2
D. CYP2C19
Answer: B
Conceptual Explanation: CYP3A4 is the most abundant CYP enzyme in the liver and is
involved in the metabolism of roughly half of all prescribed medications.
6. When a drug is a ‘prodrug,’ what does this imply regarding its metabolism?
A. It is excreted unchanged by the kidneys.
B. It bypasses the liver entirely.
