1st exposure to foreign antigens, in an allergic reaction, causes - ANSWER ✔ Production of antibodies,
sensitization of mast cells
A 10-year-old male is diagnosed with a large tapeworm. Which of the following cells wou
...
1st exposure to foreign antigens, in an allergic reaction, causes - ANSWER ✔ Production of antibodies,
sensitization of mast cells
A 10-year-old male is diagnosed with a large tapeworm. Which of the following cells would be produced
in response to this worm?
A) Monocytes
B) Eosinophils
C) Neutrophils
D) Natural killer cells - ANSWER ✔ b
A 12-year-old male is diagnosed with Klinefelter syndrome. His karyotype would reveal which of the
following?
A) XY
B) XX
C) XYY
D) XXY - ANSWER ✔ d
A 13-year-old female fell on her knee while skating. The area became inflamed and sore to touch. Which
of the following would result from activation of the plasma system secondary to her injury?
A) Mast cell degranulation
B) Release of cellular products
C) Cellular infiltration
D) Pathogenic invasion - ANSWER ✔ c
A 13-year-old girl has a karyotype that reveals an absent homologous X chromosome with only a single X
chromosome present. Her condition is called:
A) Down syndrome.
B) Cri du chat syndrome.
C) Turner syndrome.
D) Edward syndrome - ANSWER ✔ c
A 15-year-old female is diagnosed with Prader-Willi syndrome. This condition is an example of:
A) gene imprinting.
B) an autosomal recessive trait.
C) an autosomal dominant trait.
D) a sex-linked trait. - ANSWER ✔ a
A 20-year-old female has been diagnosed with AIDS. Laboratory testing would reveal diminished levels
of:
A) cytotoxic T cells.
B) B cells.
C) helper T cells.
D) T suppressor cells. - ANSWER ✔ c
A 20-year-old pregnant female gives birth to a stillborn child. Autopsy reveals that the fetus has 92
chromosomes. Which of the following describes this condition?
A) Euploidy
B) Triploidy
C) Tetraploidy
D) Aneuploidy - ANSWER ✔ c
A 35-year-old male is diagnosed with lobar pneumonia (lung infection). Which of the following exudates
would be present in highest concentration at the site of this advanced inflammatory response?
A) Serous
B) Purulent
C) Hemorrhagic
D) Fibrinous - ANSWER ✔ d
A 5-year-old male presents with mental retardation and is diagnosed with Fragile X syndrome. Which of
the following is most likely to cause this syndrome?
A) Translocation
B) Inversion
C) Nondisjunction
D) Duplication at fragile sites - ANSWER ✔ d
A 50-year-old male was recently diagnosed with Huntington disease. Transmission of this disease is
associated with:
A) penetrance.
B) recurrence risk.
C) expressivity.
D) delayed age of onset. - ANSWER ✔ d
A child fell off the swing and scraped her knee. The injured area becomes red and painful. Which of the
following would also occur?
A) Vasoconstriction
B) Decreased RBC concentration at injured site
C) Fluid movement from tissue to vessels
D) Edema at injured site - ANSWER ✔ d
A child is diagnosed with cystic fibrosis. History reveals that the child's parents are first cousins. Cystic
fibrosis was most likely the result of:
A) X inactivation.
B) genomic imprinting.
C) consanguinity.
D) obligate carriers. - ANSWER ✔
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