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Test Bank
Description:
Master your medical, nursing, and pharmacy board exams with this comprehensive
2026/2027 test bank featuring 100 evidence-based multiple-choice questions covering genetics,
endocrinology, cardiology, respiratory disorders, pharmacology, gastroenterology,
hematology, neurology, and autoimmune conditions. Each question includes detailed clinical
explanations aligned with current guidelines, perfect for USMLE, NCLEX-RN, PANCE, and
NAPLEX preparation. Updated to reflect 2026/2027 academic standards, this high-yield study
resource transforms complex medical concepts into exam-ready knowledge.
Download now and boost your exam confidence with questions that mirror real board
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, Medical Exam Prep 2026-2027: 100 Practice Questions
SECTION A: GENETIC DISORDERS AND CONGENITAL CONDITIONS
Question 1
A 25-year-old male presents with gynecomastia, small testes, and infertility. Genetic testing
reveals an extra X chromosome. Which of the following best describes this condition?
A) Turner syndrome
B) Klinefelter syndrome
C) Fragile X syndrome
D) Prader-Willi syndrome
Answer: B
Explanation: Klinefelter syndrome is characterized by the presence of an extra X chromosome
in males (47,XXY karyotype). Clinical manifestations include small testes, gynecomastia, tall
stature, infertility, and learning difficulties. This condition results from nondisjunction during
gametogenesis and affects approximately 1 in 500-1,000 male births.
Question 2
A newborn female is diagnosed with a condition characterized by short stature, webbed neck,
and a horseshoe kidney. Chromosomal analysis reveals a 45,X karyotype. Which of the
following is the most accurate description of this syndrome?
A) Klinefelter syndrome - associated with an extra X chromosome
B) Turner syndrome - associated with a missing or structurally abnormal X chromosome
C) Triple X syndrome - associated with an extra X chromosome
D) Noonan syndrome - associated with normal karyotype
Answer: B
Explanation: Turner syndrome (45,X) results from complete or partial absence of one X
chromosome in females. Clinical features include short stature, ovarian dysgenesis, webbed
,neck, cubitus valgus, and cardiovascular abnormalities such as coarctation of the aorta.
Associated complications include right hemisphere dysfunction, hearing loss, and visual-spatial
difficulties.
Question 3
A patient with beta thalassemia major requires chronic blood transfusions. Which of the
following medications is contraindicated in this patient and should be avoided?
A) Folic acid
B) Vitamin C
C) Deferoxamine
D) Ferrous sulfate
Answer: D
Explanation: Iron supplementation in the form of ferrous sulfate is contraindicated in beta
thalassemia major because these patients already develop iron overload from chronic transfusion
therapy. Iron chelation therapy (e.g., deferoxamine, deferasirox) is the appropriate treatment to
prevent iron-induced organ damage. Folic acid supplementation may be beneficial due to
increased red blood cell turnover.
Question 4
A couple is concerned about passing on color blindness to their children. The mother is a carrier
for color blindness, and the father has normal vision. What is the probability that their son will
be color blind?
A) 0%
B) 25%
C) 50%
D) 75%
Answer: C
Explanation: Color blindness is an X-linked recessive disorder caused by mutations in the
OPN1LW and OPN1MW genes on chromosome 23. Affected males inherit the mutated gene
, from their mother. In this scenario, there is a 50% chance that the son will inherit the affected X
chromosome from his carrier mother. Daughters would need to inherit affected genes from both
parents to express the condition.
Question 5
A pediatric patient presents with ataxia and developmental delay. Genetic testing reveals a
deletion on chromosome 15 inherited from the father. Which of the following conditions is most
likely?
A) Angelman syndrome
B) Prader-Willi syndrome
C) Fragile X syndrome
D) Rett syndrome
Answer: B
Explanation: Prader-Willi syndrome results from the deletion of the paternal copy of
chromosome 15q11-13. Key features include hypotonia, failure to thrive in infancy followed by
hyperphagia and obesity, intellectual disability, and characteristic facial features. Ataxia may
also be present in affected individuals. This condition demonstrates genomic imprinting, as the
maternal copy of this region is normally silenced.
Question 6
A 6-year-old boy is brought to the clinic with recurrent infections, fatigue, and jaundice.
Laboratory findings show hemolytic anemia. Which of the following is an X-linked recessive
condition that should be suspected?
A) Sickle cell anemia
B) G6PD deficiency
C) Hereditary spherocytosis
D) Thalassemia minor
Answer: B