NR 507 ADVANCED
PATHOPHYSIOLOGY EXAM
PREPARATION QUESTIONS WITH
VERIFIED ANSWERS 2026/2027.
CHAMBERLAIN
1. A clinician is examining a patient with a long-term history of cigarette smoking. A biopsy of
the bronchial epithelium reveals that normal ciliated columnar epithelial cells have been
replaced by stratified squamous epithelial cells. This process is best described as:
A. Dysplasia
B. Hyperplasia
C. Metaplasia
D. Anaplasia
Answer: C
Conceptual Explanation: Metaplasia is the reversible replacement of one mature cell type
by another, often as a response to chronic irritation, such as smoking.
2. Which cellular process involves the programmed cell death triggered by the activation of
caspases and does not typically result in an inflammatory response?
A. Necrosis
,B. Autophagy
C. Pyroptosis
D. Apoptosis
Answer: D
Conceptual Explanation: Apoptosis is a regulated, programmed cell death process that
avoids the leakage of cellular contents, thereby preventing inflammation, unlike necrosis.
3. A patient presents with extreme muscle weakness and an EKG showing peaked T waves
and a widened QRS complex. Which electrolyte imbalance is the most likely cause?
A. Hyperkalemia
B. Hypernatremia
C. Hypokalemia
D. Hypocalcemia
Answer: A
Conceptual Explanation: Hyperkalemia (high potassium) affects cardiac conduction,
leading to peaked T waves, QRS widening, and potential cardiac arrest.
4. In the context of DNA methylation, what is the primary effect of hypermethylation of a
gene’s promoter region?
A. Increased transcription
B. Chromosomal translocation
, C. Gene silencing
D. Enhanced protein folding
Answer: C
Conceptual Explanation: Methylation of CpG islands in promoter regions generally leads
to gene silencing by preventing transcription factors from binding.
5. Which type of hypersensitivity reaction is mediated by the formation of antigen-antibody
complexes that are deposited in tissues, leading to complement activation and neutrophil
recruitment?
A. Type I
B. Type III
C. Type II
D. Type IV
Answer: B
Conceptual Explanation: Type III hypersensitivity involves immune complex deposition
(e.g., SLE or serum sickness), whereas Type II is tissue-specific antibody binding.
6. A 45-year-old male with chronic hypertension develops thickening of the left ventricular
wall. This change is an example of:
A. Pathologic hypertrophy
B. Physiologic hypertrophy
PATHOPHYSIOLOGY EXAM
PREPARATION QUESTIONS WITH
VERIFIED ANSWERS 2026/2027.
CHAMBERLAIN
1. A clinician is examining a patient with a long-term history of cigarette smoking. A biopsy of
the bronchial epithelium reveals that normal ciliated columnar epithelial cells have been
replaced by stratified squamous epithelial cells. This process is best described as:
A. Dysplasia
B. Hyperplasia
C. Metaplasia
D. Anaplasia
Answer: C
Conceptual Explanation: Metaplasia is the reversible replacement of one mature cell type
by another, often as a response to chronic irritation, such as smoking.
2. Which cellular process involves the programmed cell death triggered by the activation of
caspases and does not typically result in an inflammatory response?
A. Necrosis
,B. Autophagy
C. Pyroptosis
D. Apoptosis
Answer: D
Conceptual Explanation: Apoptosis is a regulated, programmed cell death process that
avoids the leakage of cellular contents, thereby preventing inflammation, unlike necrosis.
3. A patient presents with extreme muscle weakness and an EKG showing peaked T waves
and a widened QRS complex. Which electrolyte imbalance is the most likely cause?
A. Hyperkalemia
B. Hypernatremia
C. Hypokalemia
D. Hypocalcemia
Answer: A
Conceptual Explanation: Hyperkalemia (high potassium) affects cardiac conduction,
leading to peaked T waves, QRS widening, and potential cardiac arrest.
4. In the context of DNA methylation, what is the primary effect of hypermethylation of a
gene’s promoter region?
A. Increased transcription
B. Chromosomal translocation
, C. Gene silencing
D. Enhanced protein folding
Answer: C
Conceptual Explanation: Methylation of CpG islands in promoter regions generally leads
to gene silencing by preventing transcription factors from binding.
5. Which type of hypersensitivity reaction is mediated by the formation of antigen-antibody
complexes that are deposited in tissues, leading to complement activation and neutrophil
recruitment?
A. Type I
B. Type III
C. Type II
D. Type IV
Answer: B
Conceptual Explanation: Type III hypersensitivity involves immune complex deposition
(e.g., SLE or serum sickness), whereas Type II is tissue-specific antibody binding.
6. A 45-year-old male with chronic hypertension develops thickening of the left ventricular
wall. This change is an example of:
A. Pathologic hypertrophy
B. Physiologic hypertrophy
