Pathophysiology Exam Mastery Pack:
Disease Process Q&A||Questions And
Answers With Rationales/Graded
A+/2026 Update/100% Correct
/Instant Download
Student Name: _________________________
Date: _________________________
Total Questions: 85
Time Limit: 120 minutes
Instructions: Select the best answer for each question. Correct answers
are highlighted in bold. Rationales follow each question.
Section A: Cellular Injury, Inflammation, & Repair (Questions 1–15)
1. A patient presents with fatigue and pallor. Lab shows normocytic anemia and
elevated serum iron. Electron microscopy reveals Prussian-blue staining granules
in mitochondria of liver cells. Which cellular injury mechanism is most likely?
A. ATP depletion
B. Membrane damage
C. Mitochondrial iron toxicity
D. Ribosomal detachment
Rationale: Mitochondrial iron overload (e.g., sideroblastic anemia, Friedreich
ataxia) causes free radical injury, impairing heme synthesis. Option C is correct.
2. During ischemia-reperfusion injury, which reactive species is primarily
responsible for further cellular damage upon reoxygenation?
A. Superoxide dismutase
B. Hydroxyl radical
C. Nitric oxide synthase
D. Catalase
,Rationale: Reperfusion generates superoxide → converted to hydrogen peroxide
→ forms hydroxyl radical via Fenton reaction, causing lipid peroxidation.
3. A biopsy shows caseous necrosis with granuloma formation. This pattern is
classic for:
A. Acute pancreatitis
B. Mycobacterium tuberculosis infection
C. Ischemic stroke
D. Staph aureus abscess
Rationale: Caseous necrosis (cheese-like) is hallmark of TB. Granulomas
represent chronic inflammation with macrophages and Langhans giant cells.
4. Which cytokine is the primary endogenous pyrogen that resets the hypothalamic
set point during fever?
A. IL-10
B. IL-1β
C. TGF-β
D. IL-4
Rationale: IL-1β, TNF-α, and IL-6 act on hypothalamus → PGE2 synthesis →
fever. IL-1β is the classic endogenous pyrogen.
5. A wound heals with excessive collagen deposition forming a raised scar beyond
original margins. This is termed:
A. Atrophic scar
B. Contracture
C. Keloid
D. Hypertrophic scar
Rationale: Keloids extend beyond wound borders (unlike hypertrophic scars) due
to aberrant fibroblast activity and TGF-β dysregulation.
6. In which condition would you most likely see abundant eosinophils in tissue?
A. Viral hepatitis
B. Allergic rhinitis
C. Bacterial meningitis
D. Gouty arthritis
Rationale: Eosinophils dominate type I hypersensitivity (allergy) and parasitic
infections.
, 7. The final common pathway for most forms of necrosis involves:
A. Activation of caspases
B. Loss of plasma membrane integrity
C. Chromatin condensation
D. Apoptotic body formation
Rationale: Necrosis = unregulated cell death with membrane rupture &
inflammation (vs. apoptosis → intact membranes, caspase-dependent).
8. Chronic granulomatous disease (CGD) results from a defect in:
A. Complement C3
B. NADPH oxidase
C. Myeloperoxidase
D. Toll-like receptor 4
Rationale: CGD impairs respiratory burst → recurrent catalase-positive
bacterial/fungal infections.
9. Dystrophic calcification is most likely seen in:
A. Hyperparathyroidism
B. Atherosclerotic plaque
C. Vitamin D toxicity
D. Milk-alkali syndrome
Rationale: Dystrophic = calcium deposits in injured tissue (normal serum
calcium). Atherosclerosis, damaged heart valves, TB granulomas.
10. Which pattern of tissue necrosis is associated with fungal angioinvasion?
A. Coagulative
B. Liquefactive
C. Caseous
D. Gangrenous
Rationale: Mucor/Rhizopus cause liquefactive necrosis in brain/paranasal sinuses
due to vessel thrombosis.
11. A research lab finds that a drug blocks leukocyte emigration by inhibiting
selectin binding. Which molecule is the drug targeting?
A. ICAM-1
B. P-selectin glycoprotein ligand-1 (PSGL-1)
Disease Process Q&A||Questions And
Answers With Rationales/Graded
A+/2026 Update/100% Correct
/Instant Download
Student Name: _________________________
Date: _________________________
Total Questions: 85
Time Limit: 120 minutes
Instructions: Select the best answer for each question. Correct answers
are highlighted in bold. Rationales follow each question.
Section A: Cellular Injury, Inflammation, & Repair (Questions 1–15)
1. A patient presents with fatigue and pallor. Lab shows normocytic anemia and
elevated serum iron. Electron microscopy reveals Prussian-blue staining granules
in mitochondria of liver cells. Which cellular injury mechanism is most likely?
A. ATP depletion
B. Membrane damage
C. Mitochondrial iron toxicity
D. Ribosomal detachment
Rationale: Mitochondrial iron overload (e.g., sideroblastic anemia, Friedreich
ataxia) causes free radical injury, impairing heme synthesis. Option C is correct.
2. During ischemia-reperfusion injury, which reactive species is primarily
responsible for further cellular damage upon reoxygenation?
A. Superoxide dismutase
B. Hydroxyl radical
C. Nitric oxide synthase
D. Catalase
,Rationale: Reperfusion generates superoxide → converted to hydrogen peroxide
→ forms hydroxyl radical via Fenton reaction, causing lipid peroxidation.
3. A biopsy shows caseous necrosis with granuloma formation. This pattern is
classic for:
A. Acute pancreatitis
B. Mycobacterium tuberculosis infection
C. Ischemic stroke
D. Staph aureus abscess
Rationale: Caseous necrosis (cheese-like) is hallmark of TB. Granulomas
represent chronic inflammation with macrophages and Langhans giant cells.
4. Which cytokine is the primary endogenous pyrogen that resets the hypothalamic
set point during fever?
A. IL-10
B. IL-1β
C. TGF-β
D. IL-4
Rationale: IL-1β, TNF-α, and IL-6 act on hypothalamus → PGE2 synthesis →
fever. IL-1β is the classic endogenous pyrogen.
5. A wound heals with excessive collagen deposition forming a raised scar beyond
original margins. This is termed:
A. Atrophic scar
B. Contracture
C. Keloid
D. Hypertrophic scar
Rationale: Keloids extend beyond wound borders (unlike hypertrophic scars) due
to aberrant fibroblast activity and TGF-β dysregulation.
6. In which condition would you most likely see abundant eosinophils in tissue?
A. Viral hepatitis
B. Allergic rhinitis
C. Bacterial meningitis
D. Gouty arthritis
Rationale: Eosinophils dominate type I hypersensitivity (allergy) and parasitic
infections.
, 7. The final common pathway for most forms of necrosis involves:
A. Activation of caspases
B. Loss of plasma membrane integrity
C. Chromatin condensation
D. Apoptotic body formation
Rationale: Necrosis = unregulated cell death with membrane rupture &
inflammation (vs. apoptosis → intact membranes, caspase-dependent).
8. Chronic granulomatous disease (CGD) results from a defect in:
A. Complement C3
B. NADPH oxidase
C. Myeloperoxidase
D. Toll-like receptor 4
Rationale: CGD impairs respiratory burst → recurrent catalase-positive
bacterial/fungal infections.
9. Dystrophic calcification is most likely seen in:
A. Hyperparathyroidism
B. Atherosclerotic plaque
C. Vitamin D toxicity
D. Milk-alkali syndrome
Rationale: Dystrophic = calcium deposits in injured tissue (normal serum
calcium). Atherosclerosis, damaged heart valves, TB granulomas.
10. Which pattern of tissue necrosis is associated with fungal angioinvasion?
A. Coagulative
B. Liquefactive
C. Caseous
D. Gangrenous
Rationale: Mucor/Rhizopus cause liquefactive necrosis in brain/paranasal sinuses
due to vessel thrombosis.
11. A research lab finds that a drug blocks leukocyte emigration by inhibiting
selectin binding. Which molecule is the drug targeting?
A. ICAM-1
B. P-selectin glycoprotein ligand-1 (PSGL-1)
