NSG 530 Advanced Pathophysiology Exams 1-4 Actual Exam
2026/2027 – Comprehensive Test Bundle with Detailed
Rationales | 100% Verified | Pass Guaranteed – A+ Graded
Section 1: Exam 1 - Cellular & Genetic Pathophysiology
Q1: A patient with chronic hypertension develops left ventricular enlargement. The
cellular adaptation responsible for this change is:
A. Atrophy
B. Hypertrophy
C. Hyperplasia
D. Metaplasia
Correct Answer: B
Rationale: Hypertrophy is an increase in cell size resulting in enlarged tissue mass, as
seen in the heart muscle responding to increased workload from hypertension. Atrophy
(A) is decreased size, hyperplasia (C) is increased cell number, and metaplasia (D) is
replacement of one cell type with another.
Q2: A patient suffers a myocardial infarction. The area of dead tissue that results from
ischemia is characterized by preserved tissue architecture with loss of nuclei. This type
of necrosis is classified as:
A. Liquefactive necrosis
B. Caseous necrosis
C. Coagulative necrosis
D. Fat necrosis
Correct Answer: C
Rationale: Coagulative necrosis preserves tissue architecture for days due to
denaturation of structural proteins, characteristic of ischemic injury in most solid
organs except the brain. Liquefactive necrosis (A) occurs in the brain, caseous necrosis
(B) in tuberculosis, and fat necrosis (D) in pancreatic enzyme release.
Q3: A patient with a genetic disorder has 47 chromosomes with an extra copy of
chromosome 21. This chromosomal abnormality causes:
A. Turner syndrome
,B. Klinefelter syndrome
C. Down syndrome
D. Cri-du-chat syndrome
Correct Answer: C
Rationale: Trisomy 21 (three copies of chromosome 21) causes Down syndrome, the
most common autosomal trisomy. Turner syndrome (A) is 45,X, Klinefelter syndrome
(B) is 47,XXY, and cri-du-chat (D) results from deletion of the short arm of chromosome
5.
Q4: A mutation changes a DNA codon from CAG (glutamine) to UAG. This type of
mutation is classified as:
A. Silent mutation
B. Missense mutation
C. Nonsense mutation
D. Frameshift mutation
Correct Answer: C
Rationale: A nonsense mutation creates a premature stop codon (UAG, UAA, UGA),
terminating protein synthesis. CAG to UAG changes glutamine to a stop codon. Silent
mutations (A) don't change amino acids, missense (B) substitute amino acids, and
frameshift (D) shifts the reading frame.
Q5: A patient with a rare genetic disorder has a mutation in the mitochondrial DNA. This
inheritance pattern is characterized by:
A. Transmission from both parents equally
B. Transmission exclusively from the mother
C. Transmission exclusively from the father
D. 50% risk to all offspring regardless of sex
Correct Answer: B
Rationale: Mitochondrial DNA is inherited exclusively from the mother through the
oocyte cytoplasm. All offspring of an affected mother inherit the mutation, but no
offspring of an affected father inherit it. This differs from autosomal and X-linked
patterns.
,Q6: A patient with chronic alcoholism develops liver damage characterized by
replacement of normal hepatocytes with fibrous tissue and regenerative nodules. The
cellular adaptation preceding this change was:
A. Dysplasia
B. Metaplasia
C. Anaplasia
D. Hyperplasia
Correct Answer: B
Rationale: In chronic liver injury, hepatocytes undergo metaplasia and then fibrosis with
nodular regeneration leading to cirrhosis. Dysplasia (A) is disordered growth, anaplasia
(C) is loss of differentiation (malignancy), and hyperplasia (D) is increased cell number.
Q7: A patient experiences ischemia followed by reperfusion. The cellular injury during
reperfusion is primarily caused by:
A. Hypoxia alone
B. Free radical generation and calcium overload
C. Protein synthesis inhibition
D. DNA replication errors
Correct Answer: B
Rationale: Reperfusion injury generates reactive oxygen species (free radicals) that
damage cell membranes, proteins, and DNA, while calcium overload activates
destructive enzymes. Hypoxia (A) occurs during ischemia, not reperfusion, and
protein/DNA effects (C, D) are secondary consequences.
Q8: A patient has a genetic disorder caused by a deletion on the short arm of
chromosome 5. The infant presents with a high-pitched cry, microcephaly, and severe
intellectual disability. This disorder is:
A. Down syndrome
B. Turner syndrome
C. Cri-du-chat syndrome
D. Klinefelter syndrome
Correct Answer: C
Rationale: Cri-du-chat (5p- syndrome) results from deletion of the short arm of
chromosome 5, characterized by the distinctive cat-like cry, microcephaly, and severe
, intellectual disability. Down syndrome (A) is trisomy 21, Turner (B) is 45,X, and
Klinefelter (D) is 47,XXY.
Q9: A patient with emphysema has destruction of alveolar walls. The type of cellular
injury primarily responsible for this progressive damage is:
A. Apoptosis
B. Necrosis
C. Free radical injury from protease-antiprotease imbalance
D. Autophagy
Correct Answer: C
Rationale: Emphysema results from protease (elastase)-antiprotease (alpha-1
antitrypsin) imbalance, leading to free radical-mediated destruction of alveolar elastin
and walls. While inflammation causes some cell death, the primary mechanism is
enzymatic degradation driven by oxidative stress.
Q10: A patient has an autosomal dominant disorder with 50% risk to each offspring. If
one parent is affected and heterozygous, the probability that their first child will be
affected is:
A. 0%
B. 25%
C. 50%
D. 100%
Correct Answer: C
Rationale: Autosomal dominant inheritance: affected heterozygous parent (Aa) ×
unaffected parent (aa) yields 50% affected (Aa) and 50% unaffected (aa) offspring.
Each pregnancy has independent 50% risk regardless of previous children's status.
Q11: A patient with cancer receives chemotherapy that causes DNA cross-linking. The
mechanism of cell death in this scenario is primarily:
A. Apoptosis
B. Necrosis
C. Autophagy
D. Pyroptosis
Correct Answer: A
2026/2027 – Comprehensive Test Bundle with Detailed
Rationales | 100% Verified | Pass Guaranteed – A+ Graded
Section 1: Exam 1 - Cellular & Genetic Pathophysiology
Q1: A patient with chronic hypertension develops left ventricular enlargement. The
cellular adaptation responsible for this change is:
A. Atrophy
B. Hypertrophy
C. Hyperplasia
D. Metaplasia
Correct Answer: B
Rationale: Hypertrophy is an increase in cell size resulting in enlarged tissue mass, as
seen in the heart muscle responding to increased workload from hypertension. Atrophy
(A) is decreased size, hyperplasia (C) is increased cell number, and metaplasia (D) is
replacement of one cell type with another.
Q2: A patient suffers a myocardial infarction. The area of dead tissue that results from
ischemia is characterized by preserved tissue architecture with loss of nuclei. This type
of necrosis is classified as:
A. Liquefactive necrosis
B. Caseous necrosis
C. Coagulative necrosis
D. Fat necrosis
Correct Answer: C
Rationale: Coagulative necrosis preserves tissue architecture for days due to
denaturation of structural proteins, characteristic of ischemic injury in most solid
organs except the brain. Liquefactive necrosis (A) occurs in the brain, caseous necrosis
(B) in tuberculosis, and fat necrosis (D) in pancreatic enzyme release.
Q3: A patient with a genetic disorder has 47 chromosomes with an extra copy of
chromosome 21. This chromosomal abnormality causes:
A. Turner syndrome
,B. Klinefelter syndrome
C. Down syndrome
D. Cri-du-chat syndrome
Correct Answer: C
Rationale: Trisomy 21 (three copies of chromosome 21) causes Down syndrome, the
most common autosomal trisomy. Turner syndrome (A) is 45,X, Klinefelter syndrome
(B) is 47,XXY, and cri-du-chat (D) results from deletion of the short arm of chromosome
5.
Q4: A mutation changes a DNA codon from CAG (glutamine) to UAG. This type of
mutation is classified as:
A. Silent mutation
B. Missense mutation
C. Nonsense mutation
D. Frameshift mutation
Correct Answer: C
Rationale: A nonsense mutation creates a premature stop codon (UAG, UAA, UGA),
terminating protein synthesis. CAG to UAG changes glutamine to a stop codon. Silent
mutations (A) don't change amino acids, missense (B) substitute amino acids, and
frameshift (D) shifts the reading frame.
Q5: A patient with a rare genetic disorder has a mutation in the mitochondrial DNA. This
inheritance pattern is characterized by:
A. Transmission from both parents equally
B. Transmission exclusively from the mother
C. Transmission exclusively from the father
D. 50% risk to all offspring regardless of sex
Correct Answer: B
Rationale: Mitochondrial DNA is inherited exclusively from the mother through the
oocyte cytoplasm. All offspring of an affected mother inherit the mutation, but no
offspring of an affected father inherit it. This differs from autosomal and X-linked
patterns.
,Q6: A patient with chronic alcoholism develops liver damage characterized by
replacement of normal hepatocytes with fibrous tissue and regenerative nodules. The
cellular adaptation preceding this change was:
A. Dysplasia
B. Metaplasia
C. Anaplasia
D. Hyperplasia
Correct Answer: B
Rationale: In chronic liver injury, hepatocytes undergo metaplasia and then fibrosis with
nodular regeneration leading to cirrhosis. Dysplasia (A) is disordered growth, anaplasia
(C) is loss of differentiation (malignancy), and hyperplasia (D) is increased cell number.
Q7: A patient experiences ischemia followed by reperfusion. The cellular injury during
reperfusion is primarily caused by:
A. Hypoxia alone
B. Free radical generation and calcium overload
C. Protein synthesis inhibition
D. DNA replication errors
Correct Answer: B
Rationale: Reperfusion injury generates reactive oxygen species (free radicals) that
damage cell membranes, proteins, and DNA, while calcium overload activates
destructive enzymes. Hypoxia (A) occurs during ischemia, not reperfusion, and
protein/DNA effects (C, D) are secondary consequences.
Q8: A patient has a genetic disorder caused by a deletion on the short arm of
chromosome 5. The infant presents with a high-pitched cry, microcephaly, and severe
intellectual disability. This disorder is:
A. Down syndrome
B. Turner syndrome
C. Cri-du-chat syndrome
D. Klinefelter syndrome
Correct Answer: C
Rationale: Cri-du-chat (5p- syndrome) results from deletion of the short arm of
chromosome 5, characterized by the distinctive cat-like cry, microcephaly, and severe
, intellectual disability. Down syndrome (A) is trisomy 21, Turner (B) is 45,X, and
Klinefelter (D) is 47,XXY.
Q9: A patient with emphysema has destruction of alveolar walls. The type of cellular
injury primarily responsible for this progressive damage is:
A. Apoptosis
B. Necrosis
C. Free radical injury from protease-antiprotease imbalance
D. Autophagy
Correct Answer: C
Rationale: Emphysema results from protease (elastase)-antiprotease (alpha-1
antitrypsin) imbalance, leading to free radical-mediated destruction of alveolar elastin
and walls. While inflammation causes some cell death, the primary mechanism is
enzymatic degradation driven by oxidative stress.
Q10: A patient has an autosomal dominant disorder with 50% risk to each offspring. If
one parent is affected and heterozygous, the probability that their first child will be
affected is:
A. 0%
B. 25%
C. 50%
D. 100%
Correct Answer: C
Rationale: Autosomal dominant inheritance: affected heterozygous parent (Aa) ×
unaffected parent (aa) yields 50% affected (Aa) and 50% unaffected (aa) offspring.
Each pregnancy has independent 50% risk regardless of previous children's status.
Q11: A patient with cancer receives chemotherapy that causes DNA cross-linking. The
mechanism of cell death in this scenario is primarily:
A. Apoptosis
B. Necrosis
C. Autophagy
D. Pyroptosis
Correct Answer: A
