COMSAE Phase 1 Form 116
Exam QUESTIONS AND
VERIFIED ACCURATE
SOLUTION (DETAILED &
ELABORATED) |GET IT 100%
ACCURATE!! 2026 TEST
Question 1
A 23-year-old woman presents with fatigue and pallor.
Laboratory evaluation reveals:
• Hemoglobin: 8.5 g/dL
• MCV: 68 fL
• Ferritin: decreased
• TIBC: increased
Which mechanism best explains her anemia?
A. Defective globin chain synthesis
B. Decreased iron availability for heme production
C. Vitamin B12 deficiency
D. Bone marrow failure
E. Autoimmune hemolysis
,Answer: B. Decreased iron availability for heme production
Rationale: Iron deficiency anemia results from inadequate
iron for heme synthesis, producing microcytic, hypochromic
red blood cells with low ferritin and elevated TIBC.
Question 2
A patient develops sudden onset pleuritic chest pain two
days after knee replacement surgery. Oxygen saturation is
88%.
What is the most likely diagnosis?
A. Pneumonia
B. Asthma
C. Pulmonary embolism
D. Myocardial infarction
E. Pneumothorax
Answer: C. Pulmonary embolism
Rationale: Recent surgery is a major risk factor for venous
thromboembolism. Sudden dyspnea, hypoxemia, and pleuritic
chest pain strongly suggest pulmonary embolism.
Question 3
Which enzyme is inhibited by statin medications?
A. Acetyl-CoA carboxylase
,B. HMG-CoA reductase
C. Lipoprotein lipase
D. Hormone-sensitive lipase
E. ACAT
Answer: B. HMG-CoA reductase
Rationale: Statins competitively inhibit HMG-CoA reductase,
the rate-limiting enzyme in cholesterol biosynthesis.
Question 4
A mutation affecting dystrophin most commonly causes
which disease?
A. Myasthenia gravis
B. Duchenne muscular dystrophy
C. Multiple sclerosis
D. Amyotrophic lateral sclerosis
E. Becker nevus
Answer: B. Duchenne muscular dystrophy
Rationale: Dystrophin mutations produce Duchenne muscular
dystrophy, an X-linked disorder characterized by progressive
proximal muscle weakness.
Question 5
, A patient develops hyperpigmentation, hypotension, and
hyponatremia.
Which hormone deficiency is primarily responsible?
A. Insulin
B. Cortisol
C. Thyroxine
D. Aldosterone only
E. Growth hormone
Answer: B. Cortisol
Rationale: Primary adrenal insufficiency causes cortisol
deficiency with elevated ACTH, resulting in
hyperpigmentation. Aldosterone deficiency contributes to
electrolyte abnormalities.
Question 6
Which cranial nerve mediates the afferent limb of the corneal
reflex?
A. CN II
B. CN III
C. CN V1
D. CN VII
E. CN X
Answer: C. CN V1
Exam QUESTIONS AND
VERIFIED ACCURATE
SOLUTION (DETAILED &
ELABORATED) |GET IT 100%
ACCURATE!! 2026 TEST
Question 1
A 23-year-old woman presents with fatigue and pallor.
Laboratory evaluation reveals:
• Hemoglobin: 8.5 g/dL
• MCV: 68 fL
• Ferritin: decreased
• TIBC: increased
Which mechanism best explains her anemia?
A. Defective globin chain synthesis
B. Decreased iron availability for heme production
C. Vitamin B12 deficiency
D. Bone marrow failure
E. Autoimmune hemolysis
,Answer: B. Decreased iron availability for heme production
Rationale: Iron deficiency anemia results from inadequate
iron for heme synthesis, producing microcytic, hypochromic
red blood cells with low ferritin and elevated TIBC.
Question 2
A patient develops sudden onset pleuritic chest pain two
days after knee replacement surgery. Oxygen saturation is
88%.
What is the most likely diagnosis?
A. Pneumonia
B. Asthma
C. Pulmonary embolism
D. Myocardial infarction
E. Pneumothorax
Answer: C. Pulmonary embolism
Rationale: Recent surgery is a major risk factor for venous
thromboembolism. Sudden dyspnea, hypoxemia, and pleuritic
chest pain strongly suggest pulmonary embolism.
Question 3
Which enzyme is inhibited by statin medications?
A. Acetyl-CoA carboxylase
,B. HMG-CoA reductase
C. Lipoprotein lipase
D. Hormone-sensitive lipase
E. ACAT
Answer: B. HMG-CoA reductase
Rationale: Statins competitively inhibit HMG-CoA reductase,
the rate-limiting enzyme in cholesterol biosynthesis.
Question 4
A mutation affecting dystrophin most commonly causes
which disease?
A. Myasthenia gravis
B. Duchenne muscular dystrophy
C. Multiple sclerosis
D. Amyotrophic lateral sclerosis
E. Becker nevus
Answer: B. Duchenne muscular dystrophy
Rationale: Dystrophin mutations produce Duchenne muscular
dystrophy, an X-linked disorder characterized by progressive
proximal muscle weakness.
Question 5
, A patient develops hyperpigmentation, hypotension, and
hyponatremia.
Which hormone deficiency is primarily responsible?
A. Insulin
B. Cortisol
C. Thyroxine
D. Aldosterone only
E. Growth hormone
Answer: B. Cortisol
Rationale: Primary adrenal insufficiency causes cortisol
deficiency with elevated ACTH, resulting in
hyperpigmentation. Aldosterone deficiency contributes to
electrolyte abnormalities.
Question 6
Which cranial nerve mediates the afferent limb of the corneal
reflex?
A. CN II
B. CN III
C. CN V1
D. CN VII
E. CN X
Answer: C. CN V1
