Advanced Pathophysiology Final Exam Newest 2026
Actual Exam Test Bank| Complete 350 Real Exam
Question and Correct Detailed Answers (Verified
Answers) Graded A+- Walden
1. A patient has a mutation in the gene encoding the tumor
suppressor protein p53. Which cellular process is most directly
impaired?
A) DNA repair and apoptosis
B) Cell membrane synthesis
C) Mitochondrial ATP production
D) Ribosomal protein synthesis
Answer: A
Rationale: p53 is a transcription factor that arrests the cell cycle
for DNA repair or triggers apoptosis if damage is irreparable.
Loss of p53 function allows damaged cells to proliferate,
1
,contributing to oncogenesis. This is a foundational concept in
cancer pathophysiology .
2. Which type of cellular adaptation is most likely to occur in
the heart following chronic hypertension?
A) Hyperplasia
B) Metaplasia
C) Hypertrophy
D) Atrophy
Answer: C
Rationale: Hypertrophy (increased cell size) occurs in cardiac
myocytes in response to increased afterload from hypertension.
Unlike skeletal muscle, cardiac cells do not divide (no
hyperplasia), leading to concentric left ventricular hypertrophy .
2
,3. A patient with chronic GERD develops replacement of
squamous esophageal epithelium with columnar epithelium.
This is an example of:
A) Dysplasia
B) Metaplasia
C) Anaplasia
D) Neoplasia
Answer: B
Rationale: Metaplasia is the reversible replacement of one
differentiated cell type with another. Barrett's esophagus is a
classic example, where chronic acid exposure causes the
stratified squamous lining to transform into simple columnar
epithelium better suited to withstand the environment .
4. In reversible cell injury, the earliest ultrastructural change
seen under electron microscopy is:
3
, A) Nuclear pyknosis
B) Swelling of the endoplasmic reticulum
C) Lysosomal rupture
D) Plasma membrane disruption
Answer: B
Rationale: The earliest ultrastructural change in reversible cell
injury is swelling of the endoplasmic reticulum due to failure of
the Na⁺/K⁺ ATPase pump, leading to sodium and water
accumulation intracellularly. This occurs before nuclear changes
or membrane rupture .
5. A patient with chronic hepatitis C has an increased risk of
hepatocellular carcinoma. Which term describes this
sequence?
A) Metastasis
B) Progression
4
Actual Exam Test Bank| Complete 350 Real Exam
Question and Correct Detailed Answers (Verified
Answers) Graded A+- Walden
1. A patient has a mutation in the gene encoding the tumor
suppressor protein p53. Which cellular process is most directly
impaired?
A) DNA repair and apoptosis
B) Cell membrane synthesis
C) Mitochondrial ATP production
D) Ribosomal protein synthesis
Answer: A
Rationale: p53 is a transcription factor that arrests the cell cycle
for DNA repair or triggers apoptosis if damage is irreparable.
Loss of p53 function allows damaged cells to proliferate,
1
,contributing to oncogenesis. This is a foundational concept in
cancer pathophysiology .
2. Which type of cellular adaptation is most likely to occur in
the heart following chronic hypertension?
A) Hyperplasia
B) Metaplasia
C) Hypertrophy
D) Atrophy
Answer: C
Rationale: Hypertrophy (increased cell size) occurs in cardiac
myocytes in response to increased afterload from hypertension.
Unlike skeletal muscle, cardiac cells do not divide (no
hyperplasia), leading to concentric left ventricular hypertrophy .
2
,3. A patient with chronic GERD develops replacement of
squamous esophageal epithelium with columnar epithelium.
This is an example of:
A) Dysplasia
B) Metaplasia
C) Anaplasia
D) Neoplasia
Answer: B
Rationale: Metaplasia is the reversible replacement of one
differentiated cell type with another. Barrett's esophagus is a
classic example, where chronic acid exposure causes the
stratified squamous lining to transform into simple columnar
epithelium better suited to withstand the environment .
4. In reversible cell injury, the earliest ultrastructural change
seen under electron microscopy is:
3
, A) Nuclear pyknosis
B) Swelling of the endoplasmic reticulum
C) Lysosomal rupture
D) Plasma membrane disruption
Answer: B
Rationale: The earliest ultrastructural change in reversible cell
injury is swelling of the endoplasmic reticulum due to failure of
the Na⁺/K⁺ ATPase pump, leading to sodium and water
accumulation intracellularly. This occurs before nuclear changes
or membrane rupture .
5. A patient with chronic hepatitis C has an increased risk of
hepatocellular carcinoma. Which term describes this
sequence?
A) Metastasis
B) Progression
4
