ATI RN
Pediatric Immunization Test Questions Questions
Question 1 of 5
Activation of the complement system directly causes?
Correct Answer: A
Rationale: Complement activation leads to opsonization, enhancing phagocytosis.
Question 2 of 5
The person in the above question is experiencing a primary infection with the virus. B cells activated in a primary infection secrete which class of antibody first?
Correct Answer: D
Rationale: IgM is the first antibody produced in a primary immune response.
Question 3 of 5
Plasma cells are the end cells of
Correct Answer: B
Rationale: Plasma cells are terminally differentiated B cells that secrete antibodies.
Question 4 of 5
Which of the following molecules triggers the caspase cascade And through which cells
Correct Answer: A
Rationale: Perforin and granzymes from CD8 T cells trigger caspase-mediated apoptosis in target cells.
Question 5 of 5
A 2-year-old boy presented with failure to thrive, neonatal hypocalcemic seizure, and three attacks of sepsis. Examination reveals cleft palate and holo-systolic murmur. Of the following, the genetic predisposition of this condition is
Correct Answer: A
Rationale: These features (hypocalcemia, heart defect, cleft palate) are classic for DiGeorge syndrome, caused by 22q11.2 microdeletion.