ATI RN
NCLEX Pediatric Immunization Questions Questions
Question 1 of 5
All the following are characteristic in properdin deficiency EXCEPT
Correct Answer: D
Rationale: Properdin deficiency impairs alternative complement pathway activity, reducing hemolytic complement activity, unlike the other features linked to it.
Question 2 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 3 of 5
Neutrophils
Correct Answer: D
Rationale: Neutrophils are primary phagocytes that engulf and kill bacteria using bactericidal mechanisms.
Question 4 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 5 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.