ATI RN
NCLEX Pediatric Immunization Questions Questions
Question 1 of 5
Which of the following components of the adaptive immune system secretes immunoglobulin (Ig)?
Correct Answer: A
Rationale: Plasma cells, which are activated B cells, secrete immunoglobulins (antibodies) as part of the adaptive immune response.
Question 2 of 5
Which of the following types of antigen presenting cells (APCs) is critical in uptake and presentation of antigen to T cells?
Correct Answer: D
Rationale: All three (macrophages, dendritic cells, B cells) are APCs critical for antigen uptake and presentation to T cells; since E is moved to D, D is correct for all.
Question 3 of 5
The genes encoding which of the following are extensively polymorphic (have multiple alleles or forms of the same gene)?
Correct Answer: C
Rationale: MHC genes are highly polymorphic, providing diverse antigen presentation across populations, unlike BCR or TCR genes.
Question 4 of 5
Which of the following best describes penicillin, a hapten?
Correct Answer: D
Rationale: Penicillin is a small hapten that requires conjugation to a carrier protein to elicit an immune response.
Question 5 of 5
Binds to various cellular receptors and to complement
Correct Answer: D
Rationale: The Fc region interacts with receptors on immune cells and complement proteins.