NSG 527 FINAL EXAM LATEST 2026/2027 | Already Graded
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Section 1: Cellular & Genetic Foundations (Questions 1-15)
Question 1
A 45-year-old patient with a history of heavy smoking presents with progressive
dyspnea and is found to have emphysema. The pathophysiology involves increased
apoptosis of alveolar cells. Which mitochondrial component is released during the
intrinsic apoptotic pathway to initiate caspase activation?
A. Cytochrome c oxidase [CORRECT]
B. ATP synthase
C. Pyruvate dehydrogenase
D. Carnitine palmitoyltransferase I
Rationale: Cytochrome c is released from the mitochondrial intermembrane space
during intrinsic apoptosis, binding to Apaf-1 to form the apoptosome and activate
caspase-9, which then activates executioner caspases (3, 6, 7). ATP synthase (B)
produces ATP but does not initiate apoptosis. Pyruvate dehydrogenase (C) converts
pyruvate to acetyl-CoA for the TCA cycle. Carnitine palmitoyltransferase I (D) facilitates
fatty acid transport into mitochondria for beta-oxidation. NSG 527 emphasizes that
mitochondrial dysfunction and apoptosis are central to smoking-related lung damage,
with cytochrome c release representing the critical commitment point in the intrinsic
pathway. Wilkes University curriculum stresses understanding Bcl-2 family regulation
(pro-apoptotic Bax/Bak vs. anti-apoptotic Bcl-2/Bcl-xL) in this process.
Correct Answer: A
,Question 2
A pediatric patient with neurofibromatosis type 1 (NF1) develops multiple café-au-lait
spots and neurofibromas. Which gene mutation is responsible for this autosomal
dominant disorder, and what is the characteristic feature of this inheritance pattern
regarding expressivity?
A. BRCA1 mutation; complete penetrance with uniform expressivity
B. NF1 gene (neurofibromin) mutation; variable expressivity [CORRECT]
C. TP53 mutation; incomplete penetrance with anticipation
D. CFTR mutation; complete penetrance with uniform expressivity
Rationale: NF1 is caused by mutations in the NF1 gene encoding neurofibromin, a
tumor suppressor that negatively regulates Ras signaling. Autosomal dominant
disorders like NF1 demonstrate variable expressivity, meaning affected individuals
within the same family show widely different clinical severity—from mild café-au-lait
spots to severe complications like malignant peripheral nerve sheath tumors. BRCA1
(A) causes hereditary breast/ovarian cancer with high but not complete penetrance.
TP53 (C) causes Li-Fraumeni syndrome with incomplete penetrance. CFTR (D) causes
autosomal recessive cystic fibrosis, not dominant inheritance. NSG 527 advanced
pathophysiology requires understanding that variable expressivity in NF1 means
genetic counseling must account for unpredictable clinical manifestations, a key Wilkes
University emphasis for APN practice.
Correct Answer: B
Question 3
During the S phase of the cell cycle, a replication fork encounters a DNA double-strand
break. Which tumor suppressor protein is primarily responsible for initiating cell cycle
arrest at the G1/S checkpoint to allow DNA repair before progression?
A. Cyclin D1
B. p53 [CORRECT]
,C. Retinoblastoma protein (Rb)
D. Cyclin-dependent kinase 4 (CDK4)
Rationale: p53, the "guardian of the genome," detects DNA damage and activates p21, a
CDK inhibitor that halts the cell cycle at G1/S to enable DNA repair or trigger apoptosis
if damage is irreparable. Cyclin D1 (A) promotes G1 progression by activating CDK4/6.
Rb (C) is the downstream effector controlled by p53 via p21; hypophosphorylated Rb
blocks E2F transcription factors. CDK4 (D) phosphorylates Rb to promote G1/S
transition. NSG 527 emphasizes that p53 mutations are the most common genetic
alterations in human cancers (>50%), making this checkpoint critical for understanding
carcinogenesis. Wilkes University curriculum highlights that APNs must recognize how
chemotherapy and radiation exploit p53-dependent apoptosis in cancer cells.
Correct Answer: B
Question 4
A newborn is diagnosed with cystic fibrosis after a positive newborn screening test
showing elevated immunoreactive trypsinogen. The parents are both asymptomatic
carriers. Which inheritance pattern and molecular mechanism explain this
presentation?
A. Autosomal dominant; gain-of-function mutation in CFTR
B. Autosomal recessive; loss-of-function mutation in CFTR [CORRECT]
C. X-linked recessive; frameshift mutation in CFTR
D. Mitochondrial; point mutation in CFTR
Rationale: Cystic fibrosis follows autosomal recessive inheritance requiring two
mutated CFTR alleles (most commonly ΔF508 deletion). The CFTR protein functions as
a chloride channel; loss-of-function causes thickened mucus, defective chloride
transport, and multi-organ involvement (pancreas, lungs, liver, reproductive).
Autosomal dominant (A) requires only one mutated allele with dominant negative or
haploinsufficiency effects. X-linked recessive (C) would show male predominance with
carrier females. Mitochondrial inheritance (D) demonstrates maternal transmission and
, affects energy metabolism. NSG 527 pathophysiology requires understanding that CFTR
modulators (ivacaftor, lumacaftor) target specific mutations, making genetic diagnosis
essential for precision therapy—an evidence-based practice emphasized at Wilkes
University.
Correct Answer: B
Question 5
A 28-year-old male with progressive muscle weakness and calf pseudohypertrophy is
diagnosed with Duchenne muscular dystrophy (DMD). Genetic testing reveals a deletion
in the DMD gene. Which inheritance pattern and characteristic feature of this pattern
are present?
A. Autosomal dominant; male-to-male transmission
B. Autosomal recessive; consanguinity increases risk
C. X-linked recessive; no male-to-male transmission [CORRECT]
D. X-linked dominant; affected males more severely affected than females
Rationale: DMD is X-linked recessive, caused by dystrophin gene mutations. Males (XY)
with one mutated X chromosome are affected; females (XX) are typically carriers. No
male-to-male transmission occurs because fathers pass Y chromosomes to sons, not X.
Autosomal dominant (A) shows male-to-male transmission. Autosomal recessive (B)
requires two mutated alleles with equal gender distribution. X-linked dominant (D)
affects both sexes, though males often die in utero or are more severely affected (e.g.,
Rett syndrome). NSG 527 emphasizes that DMD pathophysiology involves dystrophin
deficiency causing sarcolemma fragility, calcium influx, muscle necrosis, and fibrosis—
requiring APNs to understand genetic counseling implications for carrier females.
Correct Answer: C
Question 6
A Questions & Verified Answers | Nursing Course Complete
Guide | Pass Guaranteed - A+ Graded
Section 1: Cellular & Genetic Foundations (Questions 1-15)
Question 1
A 45-year-old patient with a history of heavy smoking presents with progressive
dyspnea and is found to have emphysema. The pathophysiology involves increased
apoptosis of alveolar cells. Which mitochondrial component is released during the
intrinsic apoptotic pathway to initiate caspase activation?
A. Cytochrome c oxidase [CORRECT]
B. ATP synthase
C. Pyruvate dehydrogenase
D. Carnitine palmitoyltransferase I
Rationale: Cytochrome c is released from the mitochondrial intermembrane space
during intrinsic apoptosis, binding to Apaf-1 to form the apoptosome and activate
caspase-9, which then activates executioner caspases (3, 6, 7). ATP synthase (B)
produces ATP but does not initiate apoptosis. Pyruvate dehydrogenase (C) converts
pyruvate to acetyl-CoA for the TCA cycle. Carnitine palmitoyltransferase I (D) facilitates
fatty acid transport into mitochondria for beta-oxidation. NSG 527 emphasizes that
mitochondrial dysfunction and apoptosis are central to smoking-related lung damage,
with cytochrome c release representing the critical commitment point in the intrinsic
pathway. Wilkes University curriculum stresses understanding Bcl-2 family regulation
(pro-apoptotic Bax/Bak vs. anti-apoptotic Bcl-2/Bcl-xL) in this process.
Correct Answer: A
,Question 2
A pediatric patient with neurofibromatosis type 1 (NF1) develops multiple café-au-lait
spots and neurofibromas. Which gene mutation is responsible for this autosomal
dominant disorder, and what is the characteristic feature of this inheritance pattern
regarding expressivity?
A. BRCA1 mutation; complete penetrance with uniform expressivity
B. NF1 gene (neurofibromin) mutation; variable expressivity [CORRECT]
C. TP53 mutation; incomplete penetrance with anticipation
D. CFTR mutation; complete penetrance with uniform expressivity
Rationale: NF1 is caused by mutations in the NF1 gene encoding neurofibromin, a
tumor suppressor that negatively regulates Ras signaling. Autosomal dominant
disorders like NF1 demonstrate variable expressivity, meaning affected individuals
within the same family show widely different clinical severity—from mild café-au-lait
spots to severe complications like malignant peripheral nerve sheath tumors. BRCA1
(A) causes hereditary breast/ovarian cancer with high but not complete penetrance.
TP53 (C) causes Li-Fraumeni syndrome with incomplete penetrance. CFTR (D) causes
autosomal recessive cystic fibrosis, not dominant inheritance. NSG 527 advanced
pathophysiology requires understanding that variable expressivity in NF1 means
genetic counseling must account for unpredictable clinical manifestations, a key Wilkes
University emphasis for APN practice.
Correct Answer: B
Question 3
During the S phase of the cell cycle, a replication fork encounters a DNA double-strand
break. Which tumor suppressor protein is primarily responsible for initiating cell cycle
arrest at the G1/S checkpoint to allow DNA repair before progression?
A. Cyclin D1
B. p53 [CORRECT]
,C. Retinoblastoma protein (Rb)
D. Cyclin-dependent kinase 4 (CDK4)
Rationale: p53, the "guardian of the genome," detects DNA damage and activates p21, a
CDK inhibitor that halts the cell cycle at G1/S to enable DNA repair or trigger apoptosis
if damage is irreparable. Cyclin D1 (A) promotes G1 progression by activating CDK4/6.
Rb (C) is the downstream effector controlled by p53 via p21; hypophosphorylated Rb
blocks E2F transcription factors. CDK4 (D) phosphorylates Rb to promote G1/S
transition. NSG 527 emphasizes that p53 mutations are the most common genetic
alterations in human cancers (>50%), making this checkpoint critical for understanding
carcinogenesis. Wilkes University curriculum highlights that APNs must recognize how
chemotherapy and radiation exploit p53-dependent apoptosis in cancer cells.
Correct Answer: B
Question 4
A newborn is diagnosed with cystic fibrosis after a positive newborn screening test
showing elevated immunoreactive trypsinogen. The parents are both asymptomatic
carriers. Which inheritance pattern and molecular mechanism explain this
presentation?
A. Autosomal dominant; gain-of-function mutation in CFTR
B. Autosomal recessive; loss-of-function mutation in CFTR [CORRECT]
C. X-linked recessive; frameshift mutation in CFTR
D. Mitochondrial; point mutation in CFTR
Rationale: Cystic fibrosis follows autosomal recessive inheritance requiring two
mutated CFTR alleles (most commonly ΔF508 deletion). The CFTR protein functions as
a chloride channel; loss-of-function causes thickened mucus, defective chloride
transport, and multi-organ involvement (pancreas, lungs, liver, reproductive).
Autosomal dominant (A) requires only one mutated allele with dominant negative or
haploinsufficiency effects. X-linked recessive (C) would show male predominance with
carrier females. Mitochondrial inheritance (D) demonstrates maternal transmission and
, affects energy metabolism. NSG 527 pathophysiology requires understanding that CFTR
modulators (ivacaftor, lumacaftor) target specific mutations, making genetic diagnosis
essential for precision therapy—an evidence-based practice emphasized at Wilkes
University.
Correct Answer: B
Question 5
A 28-year-old male with progressive muscle weakness and calf pseudohypertrophy is
diagnosed with Duchenne muscular dystrophy (DMD). Genetic testing reveals a deletion
in the DMD gene. Which inheritance pattern and characteristic feature of this pattern
are present?
A. Autosomal dominant; male-to-male transmission
B. Autosomal recessive; consanguinity increases risk
C. X-linked recessive; no male-to-male transmission [CORRECT]
D. X-linked dominant; affected males more severely affected than females
Rationale: DMD is X-linked recessive, caused by dystrophin gene mutations. Males (XY)
with one mutated X chromosome are affected; females (XX) are typically carriers. No
male-to-male transmission occurs because fathers pass Y chromosomes to sons, not X.
Autosomal dominant (A) shows male-to-male transmission. Autosomal recessive (B)
requires two mutated alleles with equal gender distribution. X-linked dominant (D)
affects both sexes, though males often die in utero or are more severely affected (e.g.,
Rett syndrome). NSG 527 emphasizes that DMD pathophysiology involves dystrophin
deficiency causing sarcolemma fragility, calcium influx, muscle necrosis, and fibrosis—
requiring APNs to understand genetic counseling implications for carrier females.
Correct Answer: C
Question 6
