,NURS 231 Pathophysiology | Portage Learning | Academic Year
2026/2027 | Comprehensive Final Examination | 100 Verified
Questions and Correct Answer Rationales | | just released .
INTRODUCTION
This document contains 100 original verified questions designed for the NURS 231
Pathophysiology Comprehensive Final Examination. The questions are organized
across four core domains: Cellular, Genetic, and Integumentary Alterations (25
questions); Cardiovascular and Pulmonary Pathophysiology (25
questions); Gastrointestinal, Hepatic, and Renal Pathophysiology (25 questions);
and Neurological, Endocrine, and Immune Pathophysiology (25 questions). Content is
original and constructed to reinforce the official Portage Learning NURS 231 course objectives
for actual exam readiness and clinical proficiency, aligned to the 2026/2027 academic year.
Each question includes a correct answer and a rationale grounded in foundational
pathophysiology curriculum and disease-process mechanisms.
DOMAIN 1: CELLULAR, GENETIC, AND INTEGUMENTARY ALTERATIONS (25
QUESTIONS)
Question 1
Which cellular adaptation is characterized by an increase in the number of cells in a tissue or
organ?
A. Hypertrophy
B. Atrophy
C. Metaplasia
D. Hyperplasia
CorreCt Answer: D ✓
rAtionAle: Hyperplasia is an increase in cell number. Hypertrophy is an increase in cell size;
atrophy is a decrease in size or number; metaplasia is the replacement of one cell type by
another.
Question 2
What is the primary mechanism of cell injury caused by free radicals?
A. Lipid peroxidation of membrane lipids and oxidative damage to proteins and DNA
B. Direct inhibition of ATP synthase only
,C. Immediate rupture of the nucleus
D. Exclusive damage to mitochondria without membrane effects
CorreCt Answer: A ✓
rAtionAle: Reactive oxygen species (free radicals) initiate lipid peroxidation, protein
oxidation, and DNA damage, leading to membrane dysfunction and cell injury. This oxidative
stress is a key mechanism in many disease processes.
Question 3
In apoptosis, which family of enzymes is primarily responsible for executing the orderly
disassembly of the cell?
A. Kinases
B. Caspases
C. Phosphatases
D. Helicases
CorreCt Answer: B ✓
rAtionAle: Caspases are a family of cysteine-aspartic proteases that execute apoptosis by
cleaving specific cellular proteins. They are activated through intrinsic (mitochondrial) and
extrinsic (death receptor) pathways.
Question 4
A patient presents with a raised, scaly lesion on the forearm that has been present for several
months. Biopsy reveals atypical keratinocytes confined to the epidermis without invasion into
the dermis. This lesion is most consistent with:
A. Actinic keratosis
B. Squamous cell carcinoma
C. Basal cell carcinoma
D. Melanoma
CorreCt Answer: A ✓
rAtionAle: Actinic keratosis is a premalignant lesion with atypical keratinocytes confined to
the epidermis (intraepidermal). Squamous cell carcinoma (B) invades the dermis. Basal cell
carcinoma (C) arises from basal cells. Melanoma (D) arises from melanocytes.
Question 5
Which of the following is a characteristic of malignant neoplasms?
A. Encapsulated growth
B. Well-differentiated cells
, C. Invasion of surrounding tissues
D. Low mitotic rate
CorreCt Answer: C ✓
rAtionAle: Invasion of surrounding tissues is a hallmark of malignancy. Benign tumors are
encapsulated (A), well-differentiated (B), and have a low mitotic rate (D). Malignant tumors are
poorly differentiated, invasive, and have a high mitotic rate.
Question 6
A patient with a genetic disorder has a mutation in the CFTR gene. This mutation leads to
defective transport of which ion?
A. Sodium
B. Potassium
C. Chloride
D. Calcium
CorreCt Answer: C ✓
rAtionAle: Cystic fibrosis is caused by a mutation in the CFTR (cystic fibrosis
transmembrane conductance regulator) gene, which encodes a chloride channel. Defective
chloride transport leads to thick, viscous secretions in the lungs, pancreas, and other organs.
Question 7
A 45-year-old patient presents with a mole that has changed in color and size over the past few
months. The mole is asymmetrical, has irregular borders, and contains multiple shades of brown
and black. The most likely diagnosis is:
A. Actinic keratosis
B. Basal cell carcinoma
C. Squamous cell carcinoma
D. Malignant melanoma
CorreCt Answer: D ✓
rAtionAle: Malignant melanoma is characterized by the ABCDE criteria: Asymmetry, Border
irregularity, Color variation, Diameter > 6 mm, and Evolution (change over time). This lesion
meets multiple criteria.
Question 8
Which form of cell death is characterized by cell swelling, rupture, and inflammation?
A. Apoptosis
B. Necrosis
2026/2027 | Comprehensive Final Examination | 100 Verified
Questions and Correct Answer Rationales | | just released .
INTRODUCTION
This document contains 100 original verified questions designed for the NURS 231
Pathophysiology Comprehensive Final Examination. The questions are organized
across four core domains: Cellular, Genetic, and Integumentary Alterations (25
questions); Cardiovascular and Pulmonary Pathophysiology (25
questions); Gastrointestinal, Hepatic, and Renal Pathophysiology (25 questions);
and Neurological, Endocrine, and Immune Pathophysiology (25 questions). Content is
original and constructed to reinforce the official Portage Learning NURS 231 course objectives
for actual exam readiness and clinical proficiency, aligned to the 2026/2027 academic year.
Each question includes a correct answer and a rationale grounded in foundational
pathophysiology curriculum and disease-process mechanisms.
DOMAIN 1: CELLULAR, GENETIC, AND INTEGUMENTARY ALTERATIONS (25
QUESTIONS)
Question 1
Which cellular adaptation is characterized by an increase in the number of cells in a tissue or
organ?
A. Hypertrophy
B. Atrophy
C. Metaplasia
D. Hyperplasia
CorreCt Answer: D ✓
rAtionAle: Hyperplasia is an increase in cell number. Hypertrophy is an increase in cell size;
atrophy is a decrease in size or number; metaplasia is the replacement of one cell type by
another.
Question 2
What is the primary mechanism of cell injury caused by free radicals?
A. Lipid peroxidation of membrane lipids and oxidative damage to proteins and DNA
B. Direct inhibition of ATP synthase only
,C. Immediate rupture of the nucleus
D. Exclusive damage to mitochondria without membrane effects
CorreCt Answer: A ✓
rAtionAle: Reactive oxygen species (free radicals) initiate lipid peroxidation, protein
oxidation, and DNA damage, leading to membrane dysfunction and cell injury. This oxidative
stress is a key mechanism in many disease processes.
Question 3
In apoptosis, which family of enzymes is primarily responsible for executing the orderly
disassembly of the cell?
A. Kinases
B. Caspases
C. Phosphatases
D. Helicases
CorreCt Answer: B ✓
rAtionAle: Caspases are a family of cysteine-aspartic proteases that execute apoptosis by
cleaving specific cellular proteins. They are activated through intrinsic (mitochondrial) and
extrinsic (death receptor) pathways.
Question 4
A patient presents with a raised, scaly lesion on the forearm that has been present for several
months. Biopsy reveals atypical keratinocytes confined to the epidermis without invasion into
the dermis. This lesion is most consistent with:
A. Actinic keratosis
B. Squamous cell carcinoma
C. Basal cell carcinoma
D. Melanoma
CorreCt Answer: A ✓
rAtionAle: Actinic keratosis is a premalignant lesion with atypical keratinocytes confined to
the epidermis (intraepidermal). Squamous cell carcinoma (B) invades the dermis. Basal cell
carcinoma (C) arises from basal cells. Melanoma (D) arises from melanocytes.
Question 5
Which of the following is a characteristic of malignant neoplasms?
A. Encapsulated growth
B. Well-differentiated cells
, C. Invasion of surrounding tissues
D. Low mitotic rate
CorreCt Answer: C ✓
rAtionAle: Invasion of surrounding tissues is a hallmark of malignancy. Benign tumors are
encapsulated (A), well-differentiated (B), and have a low mitotic rate (D). Malignant tumors are
poorly differentiated, invasive, and have a high mitotic rate.
Question 6
A patient with a genetic disorder has a mutation in the CFTR gene. This mutation leads to
defective transport of which ion?
A. Sodium
B. Potassium
C. Chloride
D. Calcium
CorreCt Answer: C ✓
rAtionAle: Cystic fibrosis is caused by a mutation in the CFTR (cystic fibrosis
transmembrane conductance regulator) gene, which encodes a chloride channel. Defective
chloride transport leads to thick, viscous secretions in the lungs, pancreas, and other organs.
Question 7
A 45-year-old patient presents with a mole that has changed in color and size over the past few
months. The mole is asymmetrical, has irregular borders, and contains multiple shades of brown
and black. The most likely diagnosis is:
A. Actinic keratosis
B. Basal cell carcinoma
C. Squamous cell carcinoma
D. Malignant melanoma
CorreCt Answer: D ✓
rAtionAle: Malignant melanoma is characterized by the ABCDE criteria: Asymmetry, Border
irregularity, Color variation, Diameter > 6 mm, and Evolution (change over time). This lesion
meets multiple criteria.
Question 8
Which form of cell death is characterized by cell swelling, rupture, and inflammation?
A. Apoptosis
B. Necrosis
