WGU D115 OBJECTIVE ASSESSMENT (AXC2) EXAM 2026/2027 AND
STUDY GUIDE COMPLETE ACCURATE EXAM APPROVED QUESTIONS
WITH WELL ELABORATED ANSWERS WITH RATIONALES (100%
CORRECT VERIFIED SOLUTIONS) CURRENTLY UPDATED VERSION
2026 EDITION |GUARANTEED PASS A+ (BRAND NEW!) FULL REVISED
WGU D115 OA (AXC2) REAL EXAM
Which cellular adaptation is most likely to occur in the left ventricle due to chronic
hypertension?
A. Hyperplasia
B. Atrophy
C. Metaplasia
D. Hypertrophy
Correct Answer: D. Hypertrophy
Rationale: Hypertrophy is an increase in the size of cells, leading to an increase in
organ size. In chronic hypertension, the left ventricle must work harder to pump
blood against increased afterload. This increased workload causes the cardiac
muscle cells to enlarge (hypertrophy) to generate more contractile force .
A patient with chronic gastroesophageal reflux disease (GERD) develops Barrett
esophagus. This is an example of which cellular adaptation?
A. Dysplasia
B. Metaplasia
C. Hyperplasia
D. Hypertrophy
Correct Answer: B. Metaplasia
,Rationale: Metaplasia is the reversible replacement of one differentiated cell type
with another. In Barrett esophagus, the normal stratified squamous epithelium of
the lower esophagus is replaced by columnar epithelium similar to that of the
stomach or intestine as an adaptive response to chronic acid exposure .
Which type of necrosis is characteristically associated with a tuberculous
granuloma?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Caseous necrosis
D. Fat necrosis
Correct Answer: C. Caseous necrosis
Rationale: Caseous necrosis is a unique form of necrosis that combines features of
both coagulative and liquefactive necrosis. It is most commonly associated with
tuberculosis, where the tissue develops a soft, cheese-like (caseous) appearance .
A patient experiencing a myocardial infarction has cell death characterized by firm
tissue and preserved cell outlines. This is:
A. Liquefactive necrosis
B. Coagulative necrosis
C. Gangrenous necrosis
D. Fat necrosis
Correct Answer: B. Coagulative necrosis
Rationale: Coagulative necrosis is the most common type of necrosis, typically
occurring in ischemic injury to solid organs like the heart, kidney, and adrenal
glands. The denatured proteins preserve the cellular architecture for several days .
,Apoptosis is a form of cell death that is best described as:
A. Uncontrolled and always pathologic
B. Associated with significant inflammation
C. A programmed process without inflammation
D. Caused by severe cellular injury
Correct Answer: C. A programmed process without inflammation
Rationale: Apoptosis is a tightly regulated, energy-dependent process of
programmed cell death that eliminates unwanted, aged, or damaged cells without
causing an inflammatory response. It is essential for normal development and
tissue homeostasis .
The cardinal signs of inflammation include all of the following EXCEPT:
A. Redness (Rubor)
B. Pallor
C. Pain (Dolor)
D. Swelling (Tumor)
Correct Answer: B. Pallor
Rationale: The classic signs of acute inflammation are redness (rubor), heat (calor),
swelling (tumor), pain (dolor), and loss of function. Pallor, or paleness, is a sign of
decreased blood flow and is not a characteristic of active inflammation .
Which chemical mediator is primarily responsible for the vasodilation and
increased vascular permeability seen in the early stages of acute inflammation?
A. Prostaglandins
, B. Histamine
C. Leukotrienes
D. Cytokines
Correct Answer: B. Histamine
Rationale: Histamine, released primarily from mast cells, is a key mediator in the
immediate inflammatory response. It causes vasodilation of arterioles and
increases the permeability of venules, leading to the hallmark signs of redness and
swelling .
The predominant white blood cell found in acute inflammation is the:
A. Lymphocyte
B. Macrophage
C. Neutrophil
D. Eosinophil
Correct Answer: C. Neutrophil
Rationale: Neutrophils (polymorphonuclear leukocytes) are the first cells to arrive
at the site of acute inflammation, typically within hours. They are phagocytes that
engulf and destroy bacteria and other pathogens. Chronic inflammation is
characterized more by lymphocytes and macrophages .
A patient's lab results show: pH 7.32, HCO₃⁻ 18 mEq/L, and PaCO₂ 35 mm Hg.
These findings are consistent with:
A. Metabolic alkalosis
B. Respiratory acidosis
C. Metabolic acidosis
D. Respiratory alkalosis
STUDY GUIDE COMPLETE ACCURATE EXAM APPROVED QUESTIONS
WITH WELL ELABORATED ANSWERS WITH RATIONALES (100%
CORRECT VERIFIED SOLUTIONS) CURRENTLY UPDATED VERSION
2026 EDITION |GUARANTEED PASS A+ (BRAND NEW!) FULL REVISED
WGU D115 OA (AXC2) REAL EXAM
Which cellular adaptation is most likely to occur in the left ventricle due to chronic
hypertension?
A. Hyperplasia
B. Atrophy
C. Metaplasia
D. Hypertrophy
Correct Answer: D. Hypertrophy
Rationale: Hypertrophy is an increase in the size of cells, leading to an increase in
organ size. In chronic hypertension, the left ventricle must work harder to pump
blood against increased afterload. This increased workload causes the cardiac
muscle cells to enlarge (hypertrophy) to generate more contractile force .
A patient with chronic gastroesophageal reflux disease (GERD) develops Barrett
esophagus. This is an example of which cellular adaptation?
A. Dysplasia
B. Metaplasia
C. Hyperplasia
D. Hypertrophy
Correct Answer: B. Metaplasia
,Rationale: Metaplasia is the reversible replacement of one differentiated cell type
with another. In Barrett esophagus, the normal stratified squamous epithelium of
the lower esophagus is replaced by columnar epithelium similar to that of the
stomach or intestine as an adaptive response to chronic acid exposure .
Which type of necrosis is characteristically associated with a tuberculous
granuloma?
A. Coagulative necrosis
B. Liquefactive necrosis
C. Caseous necrosis
D. Fat necrosis
Correct Answer: C. Caseous necrosis
Rationale: Caseous necrosis is a unique form of necrosis that combines features of
both coagulative and liquefactive necrosis. It is most commonly associated with
tuberculosis, where the tissue develops a soft, cheese-like (caseous) appearance .
A patient experiencing a myocardial infarction has cell death characterized by firm
tissue and preserved cell outlines. This is:
A. Liquefactive necrosis
B. Coagulative necrosis
C. Gangrenous necrosis
D. Fat necrosis
Correct Answer: B. Coagulative necrosis
Rationale: Coagulative necrosis is the most common type of necrosis, typically
occurring in ischemic injury to solid organs like the heart, kidney, and adrenal
glands. The denatured proteins preserve the cellular architecture for several days .
,Apoptosis is a form of cell death that is best described as:
A. Uncontrolled and always pathologic
B. Associated with significant inflammation
C. A programmed process without inflammation
D. Caused by severe cellular injury
Correct Answer: C. A programmed process without inflammation
Rationale: Apoptosis is a tightly regulated, energy-dependent process of
programmed cell death that eliminates unwanted, aged, or damaged cells without
causing an inflammatory response. It is essential for normal development and
tissue homeostasis .
The cardinal signs of inflammation include all of the following EXCEPT:
A. Redness (Rubor)
B. Pallor
C. Pain (Dolor)
D. Swelling (Tumor)
Correct Answer: B. Pallor
Rationale: The classic signs of acute inflammation are redness (rubor), heat (calor),
swelling (tumor), pain (dolor), and loss of function. Pallor, or paleness, is a sign of
decreased blood flow and is not a characteristic of active inflammation .
Which chemical mediator is primarily responsible for the vasodilation and
increased vascular permeability seen in the early stages of acute inflammation?
A. Prostaglandins
, B. Histamine
C. Leukotrienes
D. Cytokines
Correct Answer: B. Histamine
Rationale: Histamine, released primarily from mast cells, is a key mediator in the
immediate inflammatory response. It causes vasodilation of arterioles and
increases the permeability of venules, leading to the hallmark signs of redness and
swelling .
The predominant white blood cell found in acute inflammation is the:
A. Lymphocyte
B. Macrophage
C. Neutrophil
D. Eosinophil
Correct Answer: C. Neutrophil
Rationale: Neutrophils (polymorphonuclear leukocytes) are the first cells to arrive
at the site of acute inflammation, typically within hours. They are phagocytes that
engulf and destroy bacteria and other pathogens. Chronic inflammation is
characterized more by lymphocytes and macrophages .
A patient's lab results show: pH 7.32, HCO₃⁻ 18 mEq/L, and PaCO₂ 35 mm Hg.
These findings are consistent with:
A. Metabolic alkalosis
B. Respiratory acidosis
C. Metabolic acidosis
D. Respiratory alkalosis
