NR565 ADVANCED PHARMACOLOGY FUNDAMENTALS
WEEK 4 MIDTERM PRACTICE EXAM
Original Examplify-Style Questions with Verified Answers &
Rationales
SECTION I — PHARMACOKINETICS & PHARMACODYNAMICS
Question 1
A drug is administered orally and undergoes extensive metabolism in the intestinal wall and
liver before reaching systemic circulation. Which pharmacokinetic concept is being
demonstrated?
A. Distribution
B. First-pass metabolism
C. Renal clearance
D. Protein binding
**Answer: B. First-pass metabolism**
**Rationale:** First-pass metabolism reduces the amount of orally administered drug that
reaches systemic circulation. Drugs with extensive first-pass metabolism may have substantially
lower oral bioavailability.
,---
### Question 2
Which process describes the movement of a drug from the gastrointestinal tract into systemic
circulation?
A. Absorption
B. Distribution
C. Metabolism
D. Excretion
**Answer: A. Absorption**
**Rationale:** Absorption is the movement of a drug from its site of administration into the
bloodstream.
---
### Question 3
A medication has a bioavailability of 0.40 when administered orally. What does this mean?
A. Forty percent of the dose is excreted unchanged
B. Forty percent reaches systemic circulation unchanged
C. The drug is 40% protein bound
,D. The drug has a 40-hour half-life
**Answer: B. Forty percent reaches systemic circulation unchanged**
**Rationale:** Bioavailability is the fraction of an administered dose that reaches systemic
circulation in unchanged form.
---
### Question 4
Which route provides essentially 100% bioavailability?
A. Oral
B. Subcutaneous
C. Intravenous
D. Rectal
**Answer: C. Intravenous**
**Rationale:** IV administration delivers the drug directly into systemic circulation, so
bioavailability is essentially 100%.
---
### Question 5
, A patient has severe hypoalbuminemia and receives a highly protein-bound medication. What
pharmacologic consequence is most concerning?
A. Decreased free drug concentration
B. Increased free drug concentration
C. Complete inhibition of absorption
D. Increased renal production of albumin
**Answer: B. Increased free drug concentration**
**Rationale:** Protein-bound drug is generally pharmacologically inactive. Reduced albumin
can increase the free fraction of highly protein-bound drugs, potentially increasing effects and
toxicity.
---
### Question 6
Which statement best describes pharmacodynamics?
A. What the body does to the drug
B. What the drug does to the body
C. How the kidneys eliminate a drug
D. How the liver metabolizes a drug
**Answer: B. What the drug does to the body**
WEEK 4 MIDTERM PRACTICE EXAM
Original Examplify-Style Questions with Verified Answers &
Rationales
SECTION I — PHARMACOKINETICS & PHARMACODYNAMICS
Question 1
A drug is administered orally and undergoes extensive metabolism in the intestinal wall and
liver before reaching systemic circulation. Which pharmacokinetic concept is being
demonstrated?
A. Distribution
B. First-pass metabolism
C. Renal clearance
D. Protein binding
**Answer: B. First-pass metabolism**
**Rationale:** First-pass metabolism reduces the amount of orally administered drug that
reaches systemic circulation. Drugs with extensive first-pass metabolism may have substantially
lower oral bioavailability.
,---
### Question 2
Which process describes the movement of a drug from the gastrointestinal tract into systemic
circulation?
A. Absorption
B. Distribution
C. Metabolism
D. Excretion
**Answer: A. Absorption**
**Rationale:** Absorption is the movement of a drug from its site of administration into the
bloodstream.
---
### Question 3
A medication has a bioavailability of 0.40 when administered orally. What does this mean?
A. Forty percent of the dose is excreted unchanged
B. Forty percent reaches systemic circulation unchanged
C. The drug is 40% protein bound
,D. The drug has a 40-hour half-life
**Answer: B. Forty percent reaches systemic circulation unchanged**
**Rationale:** Bioavailability is the fraction of an administered dose that reaches systemic
circulation in unchanged form.
---
### Question 4
Which route provides essentially 100% bioavailability?
A. Oral
B. Subcutaneous
C. Intravenous
D. Rectal
**Answer: C. Intravenous**
**Rationale:** IV administration delivers the drug directly into systemic circulation, so
bioavailability is essentially 100%.
---
### Question 5
, A patient has severe hypoalbuminemia and receives a highly protein-bound medication. What
pharmacologic consequence is most concerning?
A. Decreased free drug concentration
B. Increased free drug concentration
C. Complete inhibition of absorption
D. Increased renal production of albumin
**Answer: B. Increased free drug concentration**
**Rationale:** Protein-bound drug is generally pharmacologically inactive. Reduced albumin
can increase the free fraction of highly protein-bound drugs, potentially increasing effects and
toxicity.
---
### Question 6
Which statement best describes pharmacodynamics?
A. What the body does to the drug
B. What the drug does to the body
C. How the kidneys eliminate a drug
D. How the liver metabolizes a drug
**Answer: B. What the drug does to the body**
