WGU C805 PATHOPHYSIOLOGY QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) Q&A
2026 |INSTANT DOWNLOAD PDF
1. Which of the following best defines pathophysiology?
A. Study of drug mechanisms
B. Study of disease processes and functional changes
C. Study of microorganisms only
D. Study of anatomy only
Rationale: Pathophysiology focuses on functional changes due
to disease.
Correct Answer: B
2. Which cellular adaptation increases cell size?
A. Hyperplasia
B. Atrophy
C. Hypertrophy
D. Metaplasia
Rationale: Hypertrophy refers to increased cell size.
Correct Answer: C
3. Which process refers to increased number of cells?
A. Hyperplasia
B. Hypertrophy
C. Dysplasia
,D. Necrosis
Rationale: Hyperplasia is increased cell number.
Correct Answer: A
4. Reversible cell injury is characterized by:
A. Permanent DNA damage
B. Swelling and fatty change
C. Cell rupture
D. Apoptosis only
Rationale: Early injury can be reversed with swelling.
Correct Answer: B
5. Irreversible cell injury leads to:
A. Recovery
B. Adaptation
C. Cell death
D. Hyperplasia
Rationale: Severe injury results in necrosis or apoptosis.
Correct Answer: C
6. Which is the main energy-producing organelle?
A. Ribosome
B. Nucleus
C. Mitochondria
,D. Lysosome
Rationale: Mitochondria produce ATP.
Correct Answer: C
7. Necrosis is best described as:
A. Programmed cell death
B. Uncontrolled cell death with inflammation
C. Cell growth
D. Cell adaptation
Rationale: Necrosis triggers inflammation.
Correct Answer: B
8. Apoptosis is:
A. Random cell death
B. Controlled programmed cell death
C. Infection response
D. Tumor formation
Rationale: Apoptosis is regulated cell death.
Correct Answer: B
9. Inflammation primarily functions to:
A. Destroy all cells
B. Remove injurious stimuli
C. Reduce immunity
, D. Stop blood flow permanently
Rationale: It is a protective response.
Correct Answer: B
10. The cardinal signs of inflammation include:
A. Fever, chills, nausea
B. Pain, redness, heat, swelling
C. Fatigue only
D. Rash only
Rationale: Classic inflammation signs.
Correct Answer: B
11. Histamine is released primarily from:
A. RBCs
B. Mast cells
C. Platelets only
D. Neurons
Rationale: Mast cells release histamine.
Correct Answer: B
12. Fever is caused by:
A. Decreased metabolism
B. Pyrogens acting on hypothalamus
C. Low oxygen only
CORRECT ANSWERS (VERIFIED ANSWERS) Q&A
2026 |INSTANT DOWNLOAD PDF
1. Which of the following best defines pathophysiology?
A. Study of drug mechanisms
B. Study of disease processes and functional changes
C. Study of microorganisms only
D. Study of anatomy only
Rationale: Pathophysiology focuses on functional changes due
to disease.
Correct Answer: B
2. Which cellular adaptation increases cell size?
A. Hyperplasia
B. Atrophy
C. Hypertrophy
D. Metaplasia
Rationale: Hypertrophy refers to increased cell size.
Correct Answer: C
3. Which process refers to increased number of cells?
A. Hyperplasia
B. Hypertrophy
C. Dysplasia
,D. Necrosis
Rationale: Hyperplasia is increased cell number.
Correct Answer: A
4. Reversible cell injury is characterized by:
A. Permanent DNA damage
B. Swelling and fatty change
C. Cell rupture
D. Apoptosis only
Rationale: Early injury can be reversed with swelling.
Correct Answer: B
5. Irreversible cell injury leads to:
A. Recovery
B. Adaptation
C. Cell death
D. Hyperplasia
Rationale: Severe injury results in necrosis or apoptosis.
Correct Answer: C
6. Which is the main energy-producing organelle?
A. Ribosome
B. Nucleus
C. Mitochondria
,D. Lysosome
Rationale: Mitochondria produce ATP.
Correct Answer: C
7. Necrosis is best described as:
A. Programmed cell death
B. Uncontrolled cell death with inflammation
C. Cell growth
D. Cell adaptation
Rationale: Necrosis triggers inflammation.
Correct Answer: B
8. Apoptosis is:
A. Random cell death
B. Controlled programmed cell death
C. Infection response
D. Tumor formation
Rationale: Apoptosis is regulated cell death.
Correct Answer: B
9. Inflammation primarily functions to:
A. Destroy all cells
B. Remove injurious stimuli
C. Reduce immunity
, D. Stop blood flow permanently
Rationale: It is a protective response.
Correct Answer: B
10. The cardinal signs of inflammation include:
A. Fever, chills, nausea
B. Pain, redness, heat, swelling
C. Fatigue only
D. Rash only
Rationale: Classic inflammation signs.
Correct Answer: B
11. Histamine is released primarily from:
A. RBCs
B. Mast cells
C. Platelets only
D. Neurons
Rationale: Mast cells release histamine.
Correct Answer: B
12. Fever is caused by:
A. Decreased metabolism
B. Pyrogens acting on hypothalamus
C. Low oxygen only
