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ATI RN · Obstetrics and Pediatrics · Pediatric Immunity NCLEX Questions

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

Which complement pathway is activated by (and requires) antibodies, with IgM being particularly good at C1 binding?

A. Lectin
B. Classical
C. Alternative
D. Alternative

Expert Explanatory Rationale

Correct Answer: Classical

Question 2 of 5

Most peripheral B cells belong to a pool of long lived follicular B lymphocytes called ___ cells. The majority of B cells found in the fetus and neonate are ___ cells, which express the surface marker CD5. ___ cells are the most likely to be involved in autoimmunity.

A. B-1; B-1; B-1
B. B-2; B-1; B-1
C. B-1; B-1; B-2
D. B-2; B-1; B-2

Expert Explanatory Rationale

Correct Answer: B-2; B-1; B-1

Question 3 of 5

Which of the following types of antigen presenting cells (APCs) is specialized for degradation and presentation of particulate antigens to T cells?

A. Macrophage
B. Dendritic cell
C. B cell
D. None of the above

Expert Explanatory Rationale

Correct Answer: Macrophage

Question 4 of 5

In the classical pathway, which of the following complement complex serve as C3 convertase

A. C4aC2a
B. C4bC2b
C. C4bC2a
D. C4aC2b

Expert Explanatory Rationale

Correct Answer: C4bC2b

Question 5 of 5

Shifting to the left (proportion of immature neutrophil cells >5%) may occasionally be caused by all the following EXCEPT

A. burns
B. trauma
C. hemorrhage
D. megaloblastic anemia

Expert Explanatory Rationale

Correct Answer: megaloblastic anemia

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