GCU Pathophysiology Midterm Exam Study
Guide 2026 | 200 MCQs with Answers &
Rationales
Most Covered Areas:
Cellular Injury, Adaptation & Inflammation
Genetics, Immunity & Infection
Fluid, Electrolyte & Acid–Base Balance
Cardiovascular Pathophysiology
Respiratory Disorders
Renal & Urinary Disorders
Endocrine & Metabolic Disorders
Gastrointestinal & Hepatic Disorders
Neurological & Musculoskeletal Disorders
Integrated Clinical Case Questions
Section 1: Cellular Injury, Adaptation, and Inflammation (Questions 1–20)
1. Which cellular adaptation occurs when cells increase in size in response to
increased workload?
A. Hyperplasia B. Hypertrophy C. Metaplasia D. Atrophy
,Correct answer: B. Hypertrophy
Explanation: Hypertrophy is an increase in individual cell size, often caused by increased
workload. For example, cardiac muscle cells enlarge in response to chronic hypertension.
2. Which term describes an increase in the number of cells within a tissue?
A. Atrophy B. Dysplasia C. Hyperplasia D. Necrosis
Correct answer: C. Hyperplasia
Explanation: Hyperplasia is an increase in cell number due to cell proliferation. It can occur
normally, such as during breast development, or abnormally in certain hormonal conditions.
3. Which cellular adaptation involves the replacement of one mature cell type with
another mature cell type?
A. Metaplasia B. Hypertrophy C. Apoptosis D. Anaplasia
Correct answer: A. Metaplasia
Explanation: Metaplasia is a potentially reversible adaptation in which one differentiated cell
type is replaced by another better able to tolerate a persistent stressor.
4. Which process describes programmed cell death that generally does not cause
significant inflammation?
A. Necrosis B. Gangrene C. Autolysis D. Apoptosis
Correct answer: D. Apoptosis
,Explanation: Apoptosis is regulated cell death that removes damaged or unnecessary cells
while generally preserving surrounding tissue.
5. Which finding is most characteristic of necrosis?
A. Controlled cell removal without inflammation B. Cell membrane disruption and
inflammation C. Normal cellular regeneration D. Increased cell specialization
Correct answer: B. Cell membrane disruption and inflammation
Explanation: Necrosis results from irreversible cellular injury, with membrane damage and
leakage of intracellular contents that commonly triggers inflammation.
6. Which cellular change is commonly associated with reversible cell injury?
A. Cellular swelling B. Complete nuclear dissolution C. Permanent membrane rupture D.
Extensive tissue calcification
Correct answer: A. Cellular swelling
Explanation: Cellular swelling occurs when ATP depletion impairs sodium-potassium pump
function, allowing sodium and water to accumulate inside cells. It may resolve if the injury is
corrected.
7. What is the primary function of adenosine triphosphate (ATP) in cells?
A. Store genetic information B. Produce antibodies C. Provide usable energy for cellular
processes D. Transport oxygen in the blood
Correct answer: C. Provide usable energy for cellular processes
, Explanation: ATP supplies energy for processes such as active transport, muscle
contraction, and biosynthesis. Severe ATP depletion disrupts cellular homeostasis.
8. Which organelle is primarily responsible for producing ATP through aerobic
metabolism?
A. Golgi apparatus B. Lysosome C. Ribosome D. Mitochondrion
Correct answer: D. Mitochondrion
Explanation: Mitochondria generate most ATP through oxidative phosphorylation.
Mitochondrial dysfunction can contribute to cell injury and death.
9. A patient experiences reduced blood flow to a tissue. What is this condition
called?
A. Ischemia B. Hyperemia C. Edema D. Hemostasis
Correct answer: A. Ischemia
Explanation: Ischemia is inadequate blood supply to a tissue, reducing oxygen and nutrient
delivery and limiting waste removal. Prolonged ischemia can cause irreversible injury.
10. What is hypoxia?
A. Excess oxygen in tissues B. Reduced oxygen availability at the tissue level C. Increased
carbon dioxide removal D. Increased blood flow to an organ
Correct answer: B. Reduced oxygen availability at the tissue level
Guide 2026 | 200 MCQs with Answers &
Rationales
Most Covered Areas:
Cellular Injury, Adaptation & Inflammation
Genetics, Immunity & Infection
Fluid, Electrolyte & Acid–Base Balance
Cardiovascular Pathophysiology
Respiratory Disorders
Renal & Urinary Disorders
Endocrine & Metabolic Disorders
Gastrointestinal & Hepatic Disorders
Neurological & Musculoskeletal Disorders
Integrated Clinical Case Questions
Section 1: Cellular Injury, Adaptation, and Inflammation (Questions 1–20)
1. Which cellular adaptation occurs when cells increase in size in response to
increased workload?
A. Hyperplasia B. Hypertrophy C. Metaplasia D. Atrophy
,Correct answer: B. Hypertrophy
Explanation: Hypertrophy is an increase in individual cell size, often caused by increased
workload. For example, cardiac muscle cells enlarge in response to chronic hypertension.
2. Which term describes an increase in the number of cells within a tissue?
A. Atrophy B. Dysplasia C. Hyperplasia D. Necrosis
Correct answer: C. Hyperplasia
Explanation: Hyperplasia is an increase in cell number due to cell proliferation. It can occur
normally, such as during breast development, or abnormally in certain hormonal conditions.
3. Which cellular adaptation involves the replacement of one mature cell type with
another mature cell type?
A. Metaplasia B. Hypertrophy C. Apoptosis D. Anaplasia
Correct answer: A. Metaplasia
Explanation: Metaplasia is a potentially reversible adaptation in which one differentiated cell
type is replaced by another better able to tolerate a persistent stressor.
4. Which process describes programmed cell death that generally does not cause
significant inflammation?
A. Necrosis B. Gangrene C. Autolysis D. Apoptosis
Correct answer: D. Apoptosis
,Explanation: Apoptosis is regulated cell death that removes damaged or unnecessary cells
while generally preserving surrounding tissue.
5. Which finding is most characteristic of necrosis?
A. Controlled cell removal without inflammation B. Cell membrane disruption and
inflammation C. Normal cellular regeneration D. Increased cell specialization
Correct answer: B. Cell membrane disruption and inflammation
Explanation: Necrosis results from irreversible cellular injury, with membrane damage and
leakage of intracellular contents that commonly triggers inflammation.
6. Which cellular change is commonly associated with reversible cell injury?
A. Cellular swelling B. Complete nuclear dissolution C. Permanent membrane rupture D.
Extensive tissue calcification
Correct answer: A. Cellular swelling
Explanation: Cellular swelling occurs when ATP depletion impairs sodium-potassium pump
function, allowing sodium and water to accumulate inside cells. It may resolve if the injury is
corrected.
7. What is the primary function of adenosine triphosphate (ATP) in cells?
A. Store genetic information B. Produce antibodies C. Provide usable energy for cellular
processes D. Transport oxygen in the blood
Correct answer: C. Provide usable energy for cellular processes
, Explanation: ATP supplies energy for processes such as active transport, muscle
contraction, and biosynthesis. Severe ATP depletion disrupts cellular homeostasis.
8. Which organelle is primarily responsible for producing ATP through aerobic
metabolism?
A. Golgi apparatus B. Lysosome C. Ribosome D. Mitochondrion
Correct answer: D. Mitochondrion
Explanation: Mitochondria generate most ATP through oxidative phosphorylation.
Mitochondrial dysfunction can contribute to cell injury and death.
9. A patient experiences reduced blood flow to a tissue. What is this condition
called?
A. Ischemia B. Hyperemia C. Edema D. Hemostasis
Correct answer: A. Ischemia
Explanation: Ischemia is inadequate blood supply to a tissue, reducing oxygen and nutrient
delivery and limiting waste removal. Prolonged ischemia can cause irreversible injury.
10. What is hypoxia?
A. Excess oxygen in tissues B. Reduced oxygen availability at the tissue level C. Increased
carbon dioxide removal D. Increased blood flow to an organ
Correct answer: B. Reduced oxygen availability at the tissue level
