WGU D115 OA ADVANCED
PATHOPHYSIOLOGY EXAM WITH
CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+
WGU D115 Advanced Pathophysiology – Practice OA
Exam
Part 1: Questions 1–25 (With Answers & Rationales)
1. Which mechanism is primarily responsible for cellular
swelling in early hypoxic injury?
A. Increased ATP production
B. Failure of Na⁺/K⁺ ATPase pump
C. Increased protein synthesis
D. Mitochondrial DNA replication
Answer: B
,Rationale:
Hypoxia decreases ATP production, leading to failure of the
Na⁺/K⁺ ATPase pump. Sodium accumulates inside the cell,
water follows, causing cellular swelling (hydropic change).
2. Which immune cell is primarily responsible for antibody
production?
A. Neutrophils
B. T lymphocytes
C. B lymphocytes
D. Macrophages
Answer: C
Rationale:
B cells differentiate into plasma cells, which produce
antibodies for humoral immunity.
3. What is the hallmark of Type I hypersensitivity reactions?
A. Immune complex deposition
,B. IgE-mediated mast cell degranulation
C. T-cell cytotoxicity
D. Complement activation only
Answer: B
Rationale:
Type I hypersensitivity (allergic reactions) involves IgE
antibodies binding allergens, triggering mast cell
degranulation and histamine release.
4. Which condition is associated with caseating granulomas?
A. Tuberculosis
B. Rheumatoid arthritis
C. Asthma
D. Acute appendicitis
Answer: A
Rationale:
, TB causes caseating granulomas due to chronic immune
response and tissue necrosis.
5. Which electrolyte imbalance is most associated with
muscle weakness and cardiac arrhythmias?
A. Hypernatremia
B. Hypokalemia
C. Hypercalcemia
D. Hypermagnesemia
Answer: B
Rationale:
Low potassium affects cardiac conduction and skeletal
muscle function, causing weakness and arrhythmias.
6. What is the primary cause of respiratory acidosis?
A. Hyperventilation
B. Hypoventilation
PATHOPHYSIOLOGY EXAM WITH
CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+
WGU D115 Advanced Pathophysiology – Practice OA
Exam
Part 1: Questions 1–25 (With Answers & Rationales)
1. Which mechanism is primarily responsible for cellular
swelling in early hypoxic injury?
A. Increased ATP production
B. Failure of Na⁺/K⁺ ATPase pump
C. Increased protein synthesis
D. Mitochondrial DNA replication
Answer: B
,Rationale:
Hypoxia decreases ATP production, leading to failure of the
Na⁺/K⁺ ATPase pump. Sodium accumulates inside the cell,
water follows, causing cellular swelling (hydropic change).
2. Which immune cell is primarily responsible for antibody
production?
A. Neutrophils
B. T lymphocytes
C. B lymphocytes
D. Macrophages
Answer: C
Rationale:
B cells differentiate into plasma cells, which produce
antibodies for humoral immunity.
3. What is the hallmark of Type I hypersensitivity reactions?
A. Immune complex deposition
,B. IgE-mediated mast cell degranulation
C. T-cell cytotoxicity
D. Complement activation only
Answer: B
Rationale:
Type I hypersensitivity (allergic reactions) involves IgE
antibodies binding allergens, triggering mast cell
degranulation and histamine release.
4. Which condition is associated with caseating granulomas?
A. Tuberculosis
B. Rheumatoid arthritis
C. Asthma
D. Acute appendicitis
Answer: A
Rationale:
, TB causes caseating granulomas due to chronic immune
response and tissue necrosis.
5. Which electrolyte imbalance is most associated with
muscle weakness and cardiac arrhythmias?
A. Hypernatremia
B. Hypokalemia
C. Hypercalcemia
D. Hypermagnesemia
Answer: B
Rationale:
Low potassium affects cardiac conduction and skeletal
muscle function, causing weakness and arrhythmias.
6. What is the primary cause of respiratory acidosis?
A. Hyperventilation
B. Hypoventilation
