WGU D236 Pathophysiology – Western Governors University – Academic Year 2026/2027 – Objective Assessment Comprehensive Examination with 100 Verified Questions and Correct Answer Rationales

Western Governors University | D236 Pathophysiology



WGU D236 Pathophysiology Objective
Assessment Comprehensive Examination
2026/2027 | Verified Questions
Western Governors University | D236 Pathophysiology | University-Level Nursing Students
100 Verified Questions | 4 Core Domains | Academic Year 2026/2027

Prepared by
Western Governors University | D236 Pathophysiology
Objective Assessment Comprehensive Examination Actual Exam | Academic Year
2026/2027




WGU D236 Pathophysiology Objective Assessment Comprehensive Examination 2026/2027 | Verified Questions

,INTRODUCTION

This comprehensive examination contains 100 original verified questions designed for university-level
nursing students preparing for the WGU D236 Pathophysiology Objective Assessment. The questions are
distributed equally across four core domains: Cellular and Genetic Alterations (25 questions), Immune
and Hematologic Disorders (25 questions), Neurological and Endocrine Pathophysiology (25 questions),
and Cardiovascular and Pulmonary Pathophysiology (25 questions). Content is original and structured to
reinforce official Western Governors University D236 course objectives for actual exam readiness and
clinical proficiency, aligned to the 2026/2027 academic year. Each question includes a correct answer and
a clinical rationale grounded in foundational pathophysiology methodology and current evidence-based
disease mechanisms.

ACTUAL QUESTIONS

Domain 1: Cellular and Genetic Alterations

Question 1. Which cellular adaptation is characterized by an increase in the number of
cells in a tissue or organ?
A. Hypertrophy
B. Hyperplasia
C. Atrophy
D. Metaplasia
Correct Answer: B
Rationale: Hyperplasia is an increase in the number of cells resulting from increased cellular division,
commonly occurring in tissues capable of mitotic division.

Question 2. A cell that has undergone irreversible injury and exhibits nuclear pyknosis,
karyorrhexis, and karyolysis is undergoing which process?
A. Apoptosis
B. Hypertrophy
C. Necrosis
D. Atrophy
Correct Answer: D
Rationale: Nuclear changes of pyknosis, karyorrhexis, and karyolysis are hallmark morphologic
features of necrosis, indicating irreversible cell death with loss of membrane integrity.

Question 3. Which type of necrosis is typically associated with ischemic injury to the heart
or kidney and preserves tissue architecture initially?
A. Liquefactive necrosis
B. Caseous necrosis
C. Coagulative necrosis
D. Fat necrosis
Correct Answer: C
Rationale: Coagulative necrosis, common in ischemic infarcts of solid organs, results from protein
denaturation that preserves the general tissue outline for a period of time.

Question 4. Metaplasia is best defined as:
A. An increase in cell size without an increase in cell number
B. Replacement of one differentiated cell type by another differentiated cell type
C. A decrease in cell size and function
D. Uncontrolled cellular proliferation with invasion




WGU D236 Pathophysiology Objective Assessment Comprehensive Examination 2026/2027 | Verified Questions

, Correct Answer: A
Rationale: Metaplasia is a reversible change in which one adult cell type is replaced by another adult
cell type, often as an adaptive response to chronic irritation.

Question 5. Which mechanism of cell injury is most directly associated with free radical
damage?
A. ATP depletion alone
B. Lipid peroxidation of membrane phospholipids
C. Influx of sodium only
D. Inhibition of protein synthesis exclusively
Correct Answer: D
Rationale: Reactive oxygen species cause lipid peroxidation of polyunsaturated fatty acids in
membranes, leading to membrane damage and cellular dysfunction.

Question 6. A mutation that changes a single nucleotide base pair and results in a different
amino acid is classified as a:
A. Silent mutation
B. Missense mutation
C. Nonsense mutation
D. Frameshift mutation
Correct Answer: A
Rationale: A missense mutation substitutes one amino acid for another in the protein product as a result
of a single base-pair substitution.

Question 7. Which statement accurately describes apoptosis?
A. It is always a pathologic process associated with inflammation
B. It is a programmed, energy-dependent process of cell death that does not typically elicit
inflammation
C. It results in the release of cellular contents into the extracellular space
D. It is characterized by cellular swelling and membrane rupture
Correct Answer: B
Rationale: Apoptosis is an orderly, ATP-dependent process of cell deletion that produces apoptotic
bodies cleared by phagocytes without significant inflammatory response.

Question 8. In autosomal dominant inheritance, which statement is correct?
A. Both alleles must be mutant for the phenotype to appear
B. Only one mutant allele is required for the phenotype to be expressed
C. The trait skips generations and appears only in males
D. Carrier females transmit the trait to all sons
Correct Answer: A
Rationale: Autosomal dominant disorders require only one copy of the mutant allele for expression of
the phenotype; transmission can occur from either parent to offspring of either sex.

Question 9. Which cellular organelle is primarily responsible for oxidative
phosphorylation and ATP production?
A. Rough endoplasmic reticulum
B. Mitochondrion
C. Golgi apparatus
D. Lysosome
Correct Answer: B



WGU D236 Pathophysiology Objective Assessment Comprehensive Examination 2026/2027 | Verified Questions