Page 1 of 47
NR 507 NP MIDTERM EXAM – ADVANCED
PATHOPHYSIOLOGY CHAMBERLAIN UNIVERSITY
2026/2027 COMPLETE (150) CURRENT TESTING
QUESTIONS AND CORRECT ANSWERS WITH DETAILED
RATIONALES.
PATHOPHYSIOLOGY
Prepare effectively for the NR 507 NP Midterm Exam with this focused study resource.
It supports review of advanced pathophysiology, disease mechanisms, cellular
changes, clinical manifestations, and physiological responses across major body
systems. Use the material to reinforce your understanding, review high-yield topics,
and identify areas that may require additional study. This resource is suited for nurse
practitioner students, advanced practice nursing learners, and candidates preparing
for the NR 507 NP midterm examination.
MULTIPLE CHOICE
Section 1: Cellular Adaptation, Injury & Death (Questions 1–20)
Which cellular organelle is responsible for ATP production through oxidative
phosphorylation?
A) Ribosome
B) Golgi apparatus
C) Mitochondrion
D) Endoplasmic reticulum
Answer: C) Mitochondrion
Rationale: The mitochondrion is the primary site of oxidative
phosphorylation, where the electron transport chain generates
approximately 36 ATP molecules per glucose molecule. It contains its
own DNA and is essential for cellular energy metabolism.
A patient with chronic heart failure develops an enlarged heart. This is an
example of which cellular adaptation?
A) Atrophy
B) Hypertrophy
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C) Hyperplasia
D) Metaplasia
Answer: B) Hypertrophy
Rationale: Hypertrophy is an increase in cell size, leading to an increase in
organ size. The heart muscle cells enlarge in response to increased
workload in heart failure.
A patient who has been bedridden for several months develops muscle
wasting. This is an example of:
A) Atrophy
B) Hypertrophy
C) Hyperplasia
D) Metaplasia
Answer: A) Atrophy
Rationale: Atrophy is a decrease in cell size due to disuse, denervation,
ischemia, or malnutrition. Muscle wasting from prolonged bed rest is a
classic example.
A chronic smoker develops changes in the epithelial lining of the bronchi,
where normal columnar epithelium is replaced by stratified squamous
epithelium. This is an example of:
A) Atrophy
B) Hypertrophy
C) Hyperplasia
D) Metaplasia
Answer: D) Metaplasia
Rationale: Metaplasia is the reversible replacement of one differentiated
cell type by another. The change from columnar to squamous epithelium
in the bronchi of smokers is a classic example.
Which of the following cellular adaptations is reversible?
A) Atrophy
B) Hypertrophy
C) Metaplasia
D) All of the above
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Answer: D) All of the above
Rationale: Atrophy, hypertrophy, and metaplasia are all potentially
reversible cellular adaptations if the stimulus is removed.
The most common cause of cellular injury is:
A) Physical trauma
B) Chemical injury
C) Hypoxia
D) Genetic defects
Answer: C) Hypoxia
Rationale: Hypoxia (oxygen deficiency) is the most common cause of
cellular injury. It can result from ischemia, anemia, or respiratory failure.
What is the primary mechanism of cellular injury in hypoxia?
A) Increased ATP production
B) Decreased ATP production leading to failure of the sodium-potassium
pump
C) Increased cell division
D) Activation of the immune response
Answer: B) Decreased ATP production leading to failure of the sodium-
potassium pump
Rationale: In hypoxia, decreased oxygen leads to decreased ATP
production. Without ATP, the sodium-potassium pump fails, causing
sodium to accumulate inside the cell, water to follow, and cellular
swelling.
Which of the following is a hallmark of irreversible cellular injury?
A) Cellular swelling
B) Fatty changes
C) Nuclear changes (pyknosis, karyolysis, karyorrhexis)
D) Loss of microvilli
Answer: C) Nuclear changes (pyknosis, karyolysis, karyorrhexis)
Rationale: Nuclear changes indicate irreversible cell injury and cell death.
Pyknosis (nuclear shrinkage), karyolysis (nuclear dissolution), and
karyorrhexis (nuclear fragmentation) are signs of irreversible injury.
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Necrosis is defined as:
A) Programmed cell death
B) Unregulated cell death due to injury
C) Cell shrinkage without inflammation
D) Cell division
Answer: B) Unregulated cell death due to injury
Rationale: Necrosis is unregulated, passive cell death due to injury that
results in inflammation. Apoptosis is programmed, regulated cell death
without inflammation.
Apoptosis is defined as:
A) Programmed cell death
B) Unregulated cell death due to injury
C) Cell swelling with inflammation
D) Cell division
Answer: A) Programmed cell death
Rationale: Apoptosis is programmed, regulated cell death that is
genetically controlled and occurs without inflammation.
A patient with tuberculosis develops caseous necrosis in the lungs. This type
of necrosis is characterized by:
A) Dry, cheese-like appearance
B) Soft, liquid-like appearance
C) Fatty, yellow appearance
D) Fibrinous appearance
Answer: A) Dry, cheese-like appearance
Rationale: Caseous necrosis, seen in tuberculosis, has a dry, cheese-like
appearance. Liquefactive necrosis results in a liquid, pus-like
appearance.
A patient with pancreatitis develops fat necrosis. This type of necrosis is
caused by:
A) Ischemia
B) Bacterial infection
NR 507 NP MIDTERM EXAM – ADVANCED
PATHOPHYSIOLOGY CHAMBERLAIN UNIVERSITY
2026/2027 COMPLETE (150) CURRENT TESTING
QUESTIONS AND CORRECT ANSWERS WITH DETAILED
RATIONALES.
PATHOPHYSIOLOGY
Prepare effectively for the NR 507 NP Midterm Exam with this focused study resource.
It supports review of advanced pathophysiology, disease mechanisms, cellular
changes, clinical manifestations, and physiological responses across major body
systems. Use the material to reinforce your understanding, review high-yield topics,
and identify areas that may require additional study. This resource is suited for nurse
practitioner students, advanced practice nursing learners, and candidates preparing
for the NR 507 NP midterm examination.
MULTIPLE CHOICE
Section 1: Cellular Adaptation, Injury & Death (Questions 1–20)
Which cellular organelle is responsible for ATP production through oxidative
phosphorylation?
A) Ribosome
B) Golgi apparatus
C) Mitochondrion
D) Endoplasmic reticulum
Answer: C) Mitochondrion
Rationale: The mitochondrion is the primary site of oxidative
phosphorylation, where the electron transport chain generates
approximately 36 ATP molecules per glucose molecule. It contains its
own DNA and is essential for cellular energy metabolism.
A patient with chronic heart failure develops an enlarged heart. This is an
example of which cellular adaptation?
A) Atrophy
B) Hypertrophy
, Page 2 of 47
C) Hyperplasia
D) Metaplasia
Answer: B) Hypertrophy
Rationale: Hypertrophy is an increase in cell size, leading to an increase in
organ size. The heart muscle cells enlarge in response to increased
workload in heart failure.
A patient who has been bedridden for several months develops muscle
wasting. This is an example of:
A) Atrophy
B) Hypertrophy
C) Hyperplasia
D) Metaplasia
Answer: A) Atrophy
Rationale: Atrophy is a decrease in cell size due to disuse, denervation,
ischemia, or malnutrition. Muscle wasting from prolonged bed rest is a
classic example.
A chronic smoker develops changes in the epithelial lining of the bronchi,
where normal columnar epithelium is replaced by stratified squamous
epithelium. This is an example of:
A) Atrophy
B) Hypertrophy
C) Hyperplasia
D) Metaplasia
Answer: D) Metaplasia
Rationale: Metaplasia is the reversible replacement of one differentiated
cell type by another. The change from columnar to squamous epithelium
in the bronchi of smokers is a classic example.
Which of the following cellular adaptations is reversible?
A) Atrophy
B) Hypertrophy
C) Metaplasia
D) All of the above
, Page 3 of 47
Answer: D) All of the above
Rationale: Atrophy, hypertrophy, and metaplasia are all potentially
reversible cellular adaptations if the stimulus is removed.
The most common cause of cellular injury is:
A) Physical trauma
B) Chemical injury
C) Hypoxia
D) Genetic defects
Answer: C) Hypoxia
Rationale: Hypoxia (oxygen deficiency) is the most common cause of
cellular injury. It can result from ischemia, anemia, or respiratory failure.
What is the primary mechanism of cellular injury in hypoxia?
A) Increased ATP production
B) Decreased ATP production leading to failure of the sodium-potassium
pump
C) Increased cell division
D) Activation of the immune response
Answer: B) Decreased ATP production leading to failure of the sodium-
potassium pump
Rationale: In hypoxia, decreased oxygen leads to decreased ATP
production. Without ATP, the sodium-potassium pump fails, causing
sodium to accumulate inside the cell, water to follow, and cellular
swelling.
Which of the following is a hallmark of irreversible cellular injury?
A) Cellular swelling
B) Fatty changes
C) Nuclear changes (pyknosis, karyolysis, karyorrhexis)
D) Loss of microvilli
Answer: C) Nuclear changes (pyknosis, karyolysis, karyorrhexis)
Rationale: Nuclear changes indicate irreversible cell injury and cell death.
Pyknosis (nuclear shrinkage), karyolysis (nuclear dissolution), and
karyorrhexis (nuclear fragmentation) are signs of irreversible injury.
, Page 4 of 47
Necrosis is defined as:
A) Programmed cell death
B) Unregulated cell death due to injury
C) Cell shrinkage without inflammation
D) Cell division
Answer: B) Unregulated cell death due to injury
Rationale: Necrosis is unregulated, passive cell death due to injury that
results in inflammation. Apoptosis is programmed, regulated cell death
without inflammation.
Apoptosis is defined as:
A) Programmed cell death
B) Unregulated cell death due to injury
C) Cell swelling with inflammation
D) Cell division
Answer: A) Programmed cell death
Rationale: Apoptosis is programmed, regulated cell death that is
genetically controlled and occurs without inflammation.
A patient with tuberculosis develops caseous necrosis in the lungs. This type
of necrosis is characterized by:
A) Dry, cheese-like appearance
B) Soft, liquid-like appearance
C) Fatty, yellow appearance
D) Fibrinous appearance
Answer: A) Dry, cheese-like appearance
Rationale: Caseous necrosis, seen in tuberculosis, has a dry, cheese-like
appearance. Liquefactive necrosis results in a liquid, pus-like
appearance.
A patient with pancreatitis develops fat necrosis. This type of necrosis is
caused by:
A) Ischemia
B) Bacterial infection
