PATHOLOGY FULL EXAM + ANSWERS: INTERMEDIATE TO
ADVANCED UNIVERSITY LEVEL
SECTION A: GENERAL PATHOLOGY AND CELL INJURY
1. Which of the following best describes the primary mechanism of reversible cell
injury?
A. ATP depletion with cellular swelling
B. Irreversible mitochondrial permeability transition
C. Nuclear chromatin condensation
D. Plasma membrane rupture
Answer: A. ATP depletion with cellular swelling
Rationale: Reversible injury is characterized by ATP depletion, ionic imbalance, and
cellular swelling, whereas irreversible injury involves membrane rupture and
nuclear dissolution.
2. A 55-year-old man with chronic alcoholism develops fatty change in the liver. Which
process best explains this finding?
A. Increased lipolysis
B. Impaired apolipoprotein synthesis
C. Enhanced beta-oxidation
D. Decreased triglyceride synthesis
Answer: B. Impaired apolipoprotein synthesis
Rationale: Alcohol metabolism impairs apolipoprotein synthesis, reducing VLDL
export and causing triglyceride accumulation in hepatocytes.
3. Which of the following is the hallmark of irreversible cell injury?
A. Ribosomal detachment
, B. Cell swelling
C. Membrane integrity loss
D. Glycogen depletion
Answer: C. Membrane integrity loss
Rationale: Loss of membrane integrity, particularly mitochondrial and plasma
membranes, is a defining feature of irreversible injury and cell death.
4. In apoptosis, which caspase is considered the primary executioner?
A. Caspase-1
B. Caspase-3
C. Caspase-8
D. Caspase-9
Answer: B. Caspase-3
Rationale: Caspase-3 is the main executioner caspase that cleaves cytoskeletal and
nuclear proteins, leading to apoptotic cell death.
5. Which type of necrosis is most characteristic of myocardial infarction?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Caseous necrosis
D. Fat necrosis
Answer: A. Coagulative necrosis
Rationale: Ischemic injury in solid organs such as the heart produces coagulative
necrosis, preserving tissue architecture temporarily.
SECTION B: INFLAMMATION AND REPAIR
6. Which cell is the first to arrive at the site of acute inflammation?
A. Lymphocyte
B. Neutrophil
C. Macrophage
D. Eosinophil
Answer: B. Neutrophil
Rationale: Neutrophils are the earliest responders in acute inflammation, arriving
within minutes to hours via margination and transmigration.
7. Which mediator is primarily responsible for vasodilation in acute inflammation?
A. Histamine
B. Thromboxane A2
C. Leukotriene B4
ADVANCED UNIVERSITY LEVEL
SECTION A: GENERAL PATHOLOGY AND CELL INJURY
1. Which of the following best describes the primary mechanism of reversible cell
injury?
A. ATP depletion with cellular swelling
B. Irreversible mitochondrial permeability transition
C. Nuclear chromatin condensation
D. Plasma membrane rupture
Answer: A. ATP depletion with cellular swelling
Rationale: Reversible injury is characterized by ATP depletion, ionic imbalance, and
cellular swelling, whereas irreversible injury involves membrane rupture and
nuclear dissolution.
2. A 55-year-old man with chronic alcoholism develops fatty change in the liver. Which
process best explains this finding?
A. Increased lipolysis
B. Impaired apolipoprotein synthesis
C. Enhanced beta-oxidation
D. Decreased triglyceride synthesis
Answer: B. Impaired apolipoprotein synthesis
Rationale: Alcohol metabolism impairs apolipoprotein synthesis, reducing VLDL
export and causing triglyceride accumulation in hepatocytes.
3. Which of the following is the hallmark of irreversible cell injury?
A. Ribosomal detachment
, B. Cell swelling
C. Membrane integrity loss
D. Glycogen depletion
Answer: C. Membrane integrity loss
Rationale: Loss of membrane integrity, particularly mitochondrial and plasma
membranes, is a defining feature of irreversible injury and cell death.
4. In apoptosis, which caspase is considered the primary executioner?
A. Caspase-1
B. Caspase-3
C. Caspase-8
D. Caspase-9
Answer: B. Caspase-3
Rationale: Caspase-3 is the main executioner caspase that cleaves cytoskeletal and
nuclear proteins, leading to apoptotic cell death.
5. Which type of necrosis is most characteristic of myocardial infarction?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Caseous necrosis
D. Fat necrosis
Answer: A. Coagulative necrosis
Rationale: Ischemic injury in solid organs such as the heart produces coagulative
necrosis, preserving tissue architecture temporarily.
SECTION B: INFLAMMATION AND REPAIR
6. Which cell is the first to arrive at the site of acute inflammation?
A. Lymphocyte
B. Neutrophil
C. Macrophage
D. Eosinophil
Answer: B. Neutrophil
Rationale: Neutrophils are the earliest responders in acute inflammation, arriving
within minutes to hours via margination and transmigration.
7. Which mediator is primarily responsible for vasodilation in acute inflammation?
A. Histamine
B. Thromboxane A2
C. Leukotriene B4
