NUR 105 PATHOPHYSIOLOGY EXAM 1 CELLULAR ADAPTATION
QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A
|STUDY GUIDE| INSTANT DOWNLOAD PDF
Core Domains
Cellular adaptation mechanisms
Hypertrophy and hyperplasia
Atrophy and metaplasia
Dysplasia and anaplasia
Reversible cell injury
Irreversible cell injury
Necrosis types and patterns
Apoptosis and programmed cell death
Hypoxia and ischemia
Free radical injury
,Introduction
This comprehensive exam assesses essential knowledge and clinical reasoning skills in cellular adaptation, a
fundamental concept in pathophysiology. Students will evaluate their understanding of how cells respond to
environmental stress, injury, and changing physiological demands. The multiple-choice and scenario-based
structure tests both foundational theory and applied professional knowledge, emphasizing real-world clinical
application and critical decision-making. Mastery of cellular adaptation concepts is critical for healthcare
professionals to recognize pathological changes, understand disease mechanisms, and make informed clinical
judgments about patient care.
SECTION ONE: Questions 1–100
Question 1
What is the primary purpose of cellular adaptation in response to environmental stress?
A. To cause immediate cell death
B. To escape and protect itself from injury
C. To initiate uncontrolled cell division
D. To increase metabolic waste production
🟢 Correct answer: B
🔴 RATIONALE: Cellular adaptation is the cell's response to escape and protect itself from injury. This
adaptive process allows cells to survive and maintain function despite adverse conditions.
,Question 2
Which cellular adaptation involves a decrease in cell size and function?
A. Hypertrophy
B. Hyperplasia
C. Atrophy
D. Metaplasia
🟢 Correct answer: C
🔴 RATIONALE: Atrophy is defined as a decrease in cell size and function. This represents tissue shrinkage and
is the opposite of hypertrophy and hyperplasia.
Question 3
Cardiac muscle enlargement due to chronic hypertension represents which type of cellular adaptation?
A. Hyperplasia
B. Hypertrophy
C. Metaplasia
D. Dysplasia
🟢 Correct answer: B
🔴 RATIONALE: Hypertrophy is an increase in cell size due to increased stimulation or functional demand.
Cardiac muscle undergoes hypertrophy (not hyperplasia) because cardiac cells cannot divide.
, Question 4
Which condition is characterized by an increase in the number of cells through cell division?
A. Hypertrophy
B. Atrophy
C. Hyperplasia
D. Metaplasia
🟢 Correct answer: C
🔴 RATIONALE: Hyperplasia is an increase in cell number through cell division. This is typically reversible and
occurs under physiological control.
Question 5
What type of cellular adaptation involves one cell type replacing another?
A. Hypertrophy
B. Metaplasia
C. Atrophy
D. Dysplasia
🟢 Correct answer: B
🔴 RATIONALE: Metaplasia is defined as one cell type replacing another. This adaptive response allows cells to
better withstand environmental stress.
QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A
|STUDY GUIDE| INSTANT DOWNLOAD PDF
Core Domains
Cellular adaptation mechanisms
Hypertrophy and hyperplasia
Atrophy and metaplasia
Dysplasia and anaplasia
Reversible cell injury
Irreversible cell injury
Necrosis types and patterns
Apoptosis and programmed cell death
Hypoxia and ischemia
Free radical injury
,Introduction
This comprehensive exam assesses essential knowledge and clinical reasoning skills in cellular adaptation, a
fundamental concept in pathophysiology. Students will evaluate their understanding of how cells respond to
environmental stress, injury, and changing physiological demands. The multiple-choice and scenario-based
structure tests both foundational theory and applied professional knowledge, emphasizing real-world clinical
application and critical decision-making. Mastery of cellular adaptation concepts is critical for healthcare
professionals to recognize pathological changes, understand disease mechanisms, and make informed clinical
judgments about patient care.
SECTION ONE: Questions 1–100
Question 1
What is the primary purpose of cellular adaptation in response to environmental stress?
A. To cause immediate cell death
B. To escape and protect itself from injury
C. To initiate uncontrolled cell division
D. To increase metabolic waste production
🟢 Correct answer: B
🔴 RATIONALE: Cellular adaptation is the cell's response to escape and protect itself from injury. This
adaptive process allows cells to survive and maintain function despite adverse conditions.
,Question 2
Which cellular adaptation involves a decrease in cell size and function?
A. Hypertrophy
B. Hyperplasia
C. Atrophy
D. Metaplasia
🟢 Correct answer: C
🔴 RATIONALE: Atrophy is defined as a decrease in cell size and function. This represents tissue shrinkage and
is the opposite of hypertrophy and hyperplasia.
Question 3
Cardiac muscle enlargement due to chronic hypertension represents which type of cellular adaptation?
A. Hyperplasia
B. Hypertrophy
C. Metaplasia
D. Dysplasia
🟢 Correct answer: B
🔴 RATIONALE: Hypertrophy is an increase in cell size due to increased stimulation or functional demand.
Cardiac muscle undergoes hypertrophy (not hyperplasia) because cardiac cells cannot divide.
, Question 4
Which condition is characterized by an increase in the number of cells through cell division?
A. Hypertrophy
B. Atrophy
C. Hyperplasia
D. Metaplasia
🟢 Correct answer: C
🔴 RATIONALE: Hyperplasia is an increase in cell number through cell division. This is typically reversible and
occurs under physiological control.
Question 5
What type of cellular adaptation involves one cell type replacing another?
A. Hypertrophy
B. Metaplasia
C. Atrophy
D. Dysplasia
🟢 Correct answer: B
🔴 RATIONALE: Metaplasia is defined as one cell type replacing another. This adaptive response allows cells to
better withstand environmental stress.
