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ATI RN · Obstetrics and Pediatrics · Pediatric Immunization NCLEX Questions Ricci

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

Which of the following is NOT true regarding the complement system?

A. They are serum proteins that form protein cascades, each activated component activating the next to generate a physiologic response

B. They can bind to bacteria, making holes in their membrane

C. They attract phagocytes to both foreign material and self cells

D. They help to eliminate immune complexes (antibody-antigen) and prevent them from damaging the body

Expert Explanatory Rationale

Correct Answer: They attract phagocytes to both foreign material and self cells

Question 2 of 5

Genes involved in antigen processing

A. TCR

B. CD3

C. CD4 & CD8

D. LMP/TAP

Expert Explanatory Rationale

Correct Answer: LMP/TAP

Question 3 of 5

An epitope...?

A. Is the area on an antigen which contacts antibody

B. Is the area on an antibody which contacts antigen

C. Requires both antigen-binding arms of the antibody molecule for its recognition

D. Is usually composed of a linear sequence of amino acids

Expert Explanatory Rationale

Correct Answer: Is the area on an antigen which contacts antibody

Question 4 of 5

Cytokines

A. Are specific, each with a single activity

B. Can be blocked by extra-cytoplasmic portions of their cellular receptor

C. Release is restricted to lymphocytes

D. Enter cells by a glucose transport system

Expert Explanatory Rationale

Correct Answer: Can be blocked by extra-cytoplasmic portions of their cellular receptor

Question 5 of 5

An infant presents with recurrent infections with Candida and viruses. Cardiac abnormalities result in the patient requiring heart surgery. During surgery, no thymus is found. Which of the following is the most likely?

A. DiGeorge's syndrome

B. Chediak-Higashi disorder

C. Bare lymphocyte syndrome (BLS)

D. Wiskott-Aldrich syndrome (WAS)

Expert Explanatory Rationale

Correct Answer: DiGeorge's syndrome

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