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WGU D236 PATHOPHYSIOLOGY EXAM 2025–2026 | 100+
VERIFIED QUESTIONS & ANSWERS WITH DETAILED
RATIONALES, ALREADY GRADED A+
Q1. Which of the following best describes pathophysiology?
A. The study of disease prevention
B. The study of normal cellular functions only
C. The study of functional changes in the body resulting from disease or injury
D. The study of pharmacology
Answer: C
Rationale: Pathophysiology focuses on how disease processes alter normal
physiological functions, explaining signs, symptoms, and complications.
Q2. A patient presents with hypoxemia. Which of the following cellular effects is
most likely?
A. Increased ATP production
B. Shift to anaerobic metabolism and lactic acid accumulation
C. Decreased oxygen consumption
D. Enhanced oxidative phosphorylation
Answer: B
Rationale: Low oxygen availability forces cells into anaerobic metabolism,
producing lactic acid and reducing ATP generation.
Q3. Which type of cell injury is caused by ischemia and hypoxia?
A. Mechanical trauma
B. Oxidative stress
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C. Oxygen deprivation
D. Viral infection
Answer: C
Rationale: Ischemia reduces blood flow and oxygen delivery to tissues, leading to
hypoxic cell injury.
Q4. Which of the following is an example of apoptosis?
A. Necrotic tissue from ischemia
B. Programmed cell death during embryonic development
C. Inflammatory cell death
D. Traumatic tissue rupture
Answer: B
Rationale: Apoptosis is a regulated, programmed cell death process important for
development and tissue homeostasis.
Q5. Which electrolyte imbalance is most likely to cause cardiac arrhythmias?
A. Hypernatremia
B. Hyperkalemia
C. Hypocalcemia
D. Hypomagnesemia
Answer: B
Rationale: Elevated potassium levels alter cardiac action potentials, increasing the
risk of arrhythmias.
Q6. Which type of edema is caused by low plasma protein levels?
A. Hydrostatic edema
B. Oncotic (colloid) edema
C. Lymphedema
D. Inflammatory edema
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Answer: B
Rationale: Low plasma proteins (e.g., albumin) reduce oncotic pressure, allowing
fluid to accumulate in interstitial spaces.
Q7. A patient has persistent hyperglycemia. Which cellular mechanism is most
affected?
A. Glycolysis only
B. Osmotic balance and cellular dehydration
C. Protein synthesis exclusively
D. Mitochondrial function unaffected
Answer: B
Rationale: High glucose levels cause osmotic shifts, leading to cellular
dehydration and potential tissue damage.
Q8. Which of the following best describes the inflammatory response?
A. A nonspecific, protective response to tissue injury or infection
B. A process that occurs only in viral infections
C. A primary function of red blood cells
D. A response to hormonal imbalance
Answer: A
Rationale: Inflammation is a nonspecific defense mechanism triggered by tissue
injury or infection to promote healing.
Q9. Which type of necrosis is associated with tuberculosis infection?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Caseous necrosis
D. Fat necrosis
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Answer: C
Rationale: Caseous necrosis has a cheese-like appearance and is characteristic of
granulomatous diseases like tuberculosis.
Q10. Which of the following best defines homeostasis?
A. The process by which the body maintains stable internal conditions despite
external changes
B. The inability to adapt to environmental stressors
C. A type of disease process
D. A form of cellular injury
Answer: A
Rationale: Homeostasis is the body’s mechanism for maintaining physiological
balance, crucial for normal function.
Q11. A patient with liver failure develops jaundice. Which type of
pathophysiologic mechanism is most responsible?
A. Accumulation of bilirubin due to impaired conjugation and excretion
B. Decreased red blood cell production
C. Hemolysis in peripheral tissues
D. Increased bile secretion
Answer: A
Rationale: Liver dysfunction prevents bilirubin processing and excretion, leading
to accumulation in tissues and yellow discoloration.
Q12. Which of the following best describes the difference between acute and
chronic inflammation?
A. Acute inflammation lasts months, chronic is immediate
B. Acute is short-term and neutrophil-driven; chronic is prolonged and
macrophage-driven
WGU D236 PATHOPHYSIOLOGY EXAM 2025–2026 | 100+
VERIFIED QUESTIONS & ANSWERS WITH DETAILED
RATIONALES, ALREADY GRADED A+
Q1. Which of the following best describes pathophysiology?
A. The study of disease prevention
B. The study of normal cellular functions only
C. The study of functional changes in the body resulting from disease or injury
D. The study of pharmacology
Answer: C
Rationale: Pathophysiology focuses on how disease processes alter normal
physiological functions, explaining signs, symptoms, and complications.
Q2. A patient presents with hypoxemia. Which of the following cellular effects is
most likely?
A. Increased ATP production
B. Shift to anaerobic metabolism and lactic acid accumulation
C. Decreased oxygen consumption
D. Enhanced oxidative phosphorylation
Answer: B
Rationale: Low oxygen availability forces cells into anaerobic metabolism,
producing lactic acid and reducing ATP generation.
Q3. Which type of cell injury is caused by ischemia and hypoxia?
A. Mechanical trauma
B. Oxidative stress
,2|Page
C. Oxygen deprivation
D. Viral infection
Answer: C
Rationale: Ischemia reduces blood flow and oxygen delivery to tissues, leading to
hypoxic cell injury.
Q4. Which of the following is an example of apoptosis?
A. Necrotic tissue from ischemia
B. Programmed cell death during embryonic development
C. Inflammatory cell death
D. Traumatic tissue rupture
Answer: B
Rationale: Apoptosis is a regulated, programmed cell death process important for
development and tissue homeostasis.
Q5. Which electrolyte imbalance is most likely to cause cardiac arrhythmias?
A. Hypernatremia
B. Hyperkalemia
C. Hypocalcemia
D. Hypomagnesemia
Answer: B
Rationale: Elevated potassium levels alter cardiac action potentials, increasing the
risk of arrhythmias.
Q6. Which type of edema is caused by low plasma protein levels?
A. Hydrostatic edema
B. Oncotic (colloid) edema
C. Lymphedema
D. Inflammatory edema
,3|Page
Answer: B
Rationale: Low plasma proteins (e.g., albumin) reduce oncotic pressure, allowing
fluid to accumulate in interstitial spaces.
Q7. A patient has persistent hyperglycemia. Which cellular mechanism is most
affected?
A. Glycolysis only
B. Osmotic balance and cellular dehydration
C. Protein synthesis exclusively
D. Mitochondrial function unaffected
Answer: B
Rationale: High glucose levels cause osmotic shifts, leading to cellular
dehydration and potential tissue damage.
Q8. Which of the following best describes the inflammatory response?
A. A nonspecific, protective response to tissue injury or infection
B. A process that occurs only in viral infections
C. A primary function of red blood cells
D. A response to hormonal imbalance
Answer: A
Rationale: Inflammation is a nonspecific defense mechanism triggered by tissue
injury or infection to promote healing.
Q9. Which type of necrosis is associated with tuberculosis infection?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Caseous necrosis
D. Fat necrosis
, 4|Page
Answer: C
Rationale: Caseous necrosis has a cheese-like appearance and is characteristic of
granulomatous diseases like tuberculosis.
Q10. Which of the following best defines homeostasis?
A. The process by which the body maintains stable internal conditions despite
external changes
B. The inability to adapt to environmental stressors
C. A type of disease process
D. A form of cellular injury
Answer: A
Rationale: Homeostasis is the body’s mechanism for maintaining physiological
balance, crucial for normal function.
Q11. A patient with liver failure develops jaundice. Which type of
pathophysiologic mechanism is most responsible?
A. Accumulation of bilirubin due to impaired conjugation and excretion
B. Decreased red blood cell production
C. Hemolysis in peripheral tissues
D. Increased bile secretion
Answer: A
Rationale: Liver dysfunction prevents bilirubin processing and excretion, leading
to accumulation in tissues and yellow discoloration.
Q12. Which of the following best describes the difference between acute and
chronic inflammation?
A. Acute inflammation lasts months, chronic is immediate
B. Acute is short-term and neutrophil-driven; chronic is prolonged and
macrophage-driven
