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ATI RN · Obstetrics and Pediatrics · Pediatric Immunization NCLEX Questions

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

Which of the following locations has cell that transport the antigens by transcytosis into sub-epithelial tissues (e.g. lamina propria) where they encounter lymphocytes?

A. Tonsils (nasopharyngeal-associated lymphoid tissue, NALT)
B. Adenoids (nasopharyngeal-associated lymphoid tissue, NALT)
C. Peyer's patches (gut-associated lymphoid tissue, GALT)
D. Axilla (lymph node center)

Expert Explanatory Rationale

Correct Answer: Peyer's patches (gut-associated lymphoid tissue, GALT)

Question 2 of 5

If alternative processing uses the second polyadenylation site, then what type of heavy chain mRNA is derived?

A. α (alpha)
B. γ (gamma)
C. δ (delta)
D. μ (mu)

Expert Explanatory Rationale

Correct Answer: δ (delta)

Question 3 of 5

Matching: Immunodeficiency - Lymphopenia plus severe neutropenia

A. Severe combined immunodeficiency (SCID)
B. Omenn syndrome
C. Reticular dysgenesis
D. Adenosine deaminase (ADA) deficiency

Expert Explanatory Rationale

Correct Answer: Reticular dysgenesis

Question 4 of 5

The classical and alternative pathways meet at complement component:

A. C3
B. C4
C. C4b
D. C5

Expert Explanatory Rationale

Correct Answer: C3

Question 5 of 5

Which of the following is NOT true regarding interferon?

A. Interferon prevents infection spreading from cell to cell
B. NK cells are activated by interferon and lyse infected cells
C. Antigen-presenting cells are inactivated
D. Interferon is viral specific, attacking viral proteins

Expert Explanatory Rationale

Correct Answer: Antigen-presenting cells are inactivated

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