NURS 6501 / NURS6501 Advanced Pathophysiology
Midterm Practice Exam Actual 2025/2026 with Detailed
Rationales | 100% Verified | Pass Guaranteed – A+
Graded
SECTION 1: Cellular & Molecular Pathophysiology (14 questions)
Q1: A patient with chronic hypertension presents with left ventricular hypertrophy.
Which cellular adaptation best describes this response?
A. Hyperplasia
B. Metaplasia
C. Hypertrophy [CORRECT]
D. Dysplasia
Correct Answer: C
Rationale: Correct because hypertrophy is an increase in cell size resulting in
enlarged tissue mass, which is the primary adaptive mechanism of cardiac muscle
to increased workload from chronic hypertension.
Q2: During ischemia, which cellular change occurs first due to lack of oxygen?
A. Decreased ATP production [CORRECT]
B. Lipid peroxidation
C. Nuclear chromatin clumping
D. Plasma membrane rupture
Correct Answer: A
Rationale: Correct because the earliest biochemical event in hypoxic cell injury is
failure of oxidative phosphorylation, leading to rapid depletion of ATP and
subsequent impairment of ion pump function.
Q3: A 65-year-old patient presents with dry gangrene of the toe. Which type of
necrosis is most likely present?
A. Caseous necrosis
B. Coagulative necrosis
C. Liquefactive necrosis
,D. Gangrenous necrosis (coagulative) [CORRECT]
Correct Answer: D
Rationale: Correct because dry gangrene results from ischemic coagulative necrosis
in solid organs with preserved tissue architecture, typically affecting the distal
extremities due to vascular insufficiency.
Q4: Which mechanism is primarily responsible for cellular swelling during reversible
cell injury?
A. Increased protein synthesis
B. Decreased ATP-dependent sodium-potassium pump function [CORRECT]
C. Excessive mitochondrial DNA replication
D. Lysosomal membrane stabilization
Correct Answer: B
Rationale: Correct because ATP depletion causes failure of the Na+/K+-ATPase
pump, leading to intracellular accumulation of sodium and water, producing cellular
hydropic swelling.
Q5: Apoptosis differs from necrosis primarily because apoptosis:
A. Triggers an inflammatory response
B. Is always pathological in nature
C. Involves programmed cell death without inflammation [CORRECT]
D. Results from acute traumatic injury
Correct Answer: C
Rationale: Correct because apoptosis is energy-dependent programmed cell death
characterized by cell shrinkage, chromatin condensation, and formation of apoptotic
bodies that are phagocytosed without triggering an inflammatory response.
Q6: A patient receiving chemotherapy develops tumor lysis syndrome. Which cellular
process is most directly responsible for the hyperkalemia?
A. Increased potassium cellular uptake
B. Massive cell lysis releasing intracellular potassium [CORRECT]
C. Decreased glomerular filtration
D. Aldosterone suppression
Correct Answer: B
Rationale: Correct because rapid destruction of malignant cells releases intracellular
contents, including potassium, phosphate, and nucleic acids, directly causing
electrolyte imbalances characteristic of tumor lysis syndrome.
, Q7: Which of the following is a hallmark of irreversible cell injury?
A. Cellular swelling
B. Fatty change
C. Mitochondrial vacuolization
D. Severe damage to plasma membranes and lysosomal rupture [CORRECT]
Correct Answer: D
Rationale: Correct because once plasma membrane integrity is severely
compromised and lysosomal enzymes leak into the cytoplasm, enzymatic digestion
of cellular components occurs, making the injury irreversible.
Q8: Free radical injury to cell membranes is primarily mediated through:
A. Protein denaturation
B. Lipid peroxidation [CORRECT]
C. DNA methylation
D. Glycogen depletion
Correct Answer: B
Rationale: Correct because free radicals attack polyunsaturated fatty acids in
membrane phospholipids, initiating lipid peroxidation that destroys membrane
integrity and produces more reactive oxygen species.
Q9: Metaplasia is best described as:
A. An increase in the number of cells
B. A decrease in cell size
C. The replacement of one differentiated cell type with another [CORRECT]
D. Abnormal tissue development
Correct Answer: C
Rationale: Correct because metaplasia is a reversible adaptive change where one
mature differentiated cell type is replaced by another mature differentiated cell type,
often in response to chronic irritation or inflammation.
Q10: A patient with chronic alcohol abuse develops hepatic steatosis. Which
mechanism best explains this finding?
A. Increased hepatic protein synthesis
B. Decreased lipolysis and impaired VLDL secretion [CORRECT]
C. Enhanced bile acid production
D. Increased glycogenolysis
Correct Answer: B
Midterm Practice Exam Actual 2025/2026 with Detailed
Rationales | 100% Verified | Pass Guaranteed – A+
Graded
SECTION 1: Cellular & Molecular Pathophysiology (14 questions)
Q1: A patient with chronic hypertension presents with left ventricular hypertrophy.
Which cellular adaptation best describes this response?
A. Hyperplasia
B. Metaplasia
C. Hypertrophy [CORRECT]
D. Dysplasia
Correct Answer: C
Rationale: Correct because hypertrophy is an increase in cell size resulting in
enlarged tissue mass, which is the primary adaptive mechanism of cardiac muscle
to increased workload from chronic hypertension.
Q2: During ischemia, which cellular change occurs first due to lack of oxygen?
A. Decreased ATP production [CORRECT]
B. Lipid peroxidation
C. Nuclear chromatin clumping
D. Plasma membrane rupture
Correct Answer: A
Rationale: Correct because the earliest biochemical event in hypoxic cell injury is
failure of oxidative phosphorylation, leading to rapid depletion of ATP and
subsequent impairment of ion pump function.
Q3: A 65-year-old patient presents with dry gangrene of the toe. Which type of
necrosis is most likely present?
A. Caseous necrosis
B. Coagulative necrosis
C. Liquefactive necrosis
,D. Gangrenous necrosis (coagulative) [CORRECT]
Correct Answer: D
Rationale: Correct because dry gangrene results from ischemic coagulative necrosis
in solid organs with preserved tissue architecture, typically affecting the distal
extremities due to vascular insufficiency.
Q4: Which mechanism is primarily responsible for cellular swelling during reversible
cell injury?
A. Increased protein synthesis
B. Decreased ATP-dependent sodium-potassium pump function [CORRECT]
C. Excessive mitochondrial DNA replication
D. Lysosomal membrane stabilization
Correct Answer: B
Rationale: Correct because ATP depletion causes failure of the Na+/K+-ATPase
pump, leading to intracellular accumulation of sodium and water, producing cellular
hydropic swelling.
Q5: Apoptosis differs from necrosis primarily because apoptosis:
A. Triggers an inflammatory response
B. Is always pathological in nature
C. Involves programmed cell death without inflammation [CORRECT]
D. Results from acute traumatic injury
Correct Answer: C
Rationale: Correct because apoptosis is energy-dependent programmed cell death
characterized by cell shrinkage, chromatin condensation, and formation of apoptotic
bodies that are phagocytosed without triggering an inflammatory response.
Q6: A patient receiving chemotherapy develops tumor lysis syndrome. Which cellular
process is most directly responsible for the hyperkalemia?
A. Increased potassium cellular uptake
B. Massive cell lysis releasing intracellular potassium [CORRECT]
C. Decreased glomerular filtration
D. Aldosterone suppression
Correct Answer: B
Rationale: Correct because rapid destruction of malignant cells releases intracellular
contents, including potassium, phosphate, and nucleic acids, directly causing
electrolyte imbalances characteristic of tumor lysis syndrome.
, Q7: Which of the following is a hallmark of irreversible cell injury?
A. Cellular swelling
B. Fatty change
C. Mitochondrial vacuolization
D. Severe damage to plasma membranes and lysosomal rupture [CORRECT]
Correct Answer: D
Rationale: Correct because once plasma membrane integrity is severely
compromised and lysosomal enzymes leak into the cytoplasm, enzymatic digestion
of cellular components occurs, making the injury irreversible.
Q8: Free radical injury to cell membranes is primarily mediated through:
A. Protein denaturation
B. Lipid peroxidation [CORRECT]
C. DNA methylation
D. Glycogen depletion
Correct Answer: B
Rationale: Correct because free radicals attack polyunsaturated fatty acids in
membrane phospholipids, initiating lipid peroxidation that destroys membrane
integrity and produces more reactive oxygen species.
Q9: Metaplasia is best described as:
A. An increase in the number of cells
B. A decrease in cell size
C. The replacement of one differentiated cell type with another [CORRECT]
D. Abnormal tissue development
Correct Answer: C
Rationale: Correct because metaplasia is a reversible adaptive change where one
mature differentiated cell type is replaced by another mature differentiated cell type,
often in response to chronic irritation or inflammation.
Q10: A patient with chronic alcohol abuse develops hepatic steatosis. Which
mechanism best explains this finding?
A. Increased hepatic protein synthesis
B. Decreased lipolysis and impaired VLDL secretion [CORRECT]
C. Enhanced bile acid production
D. Increased glycogenolysis
Correct Answer: B
