ATI RN
Pediatric Immunization NCLEX Questions Ricci Questions
Question 1 of 5
What is the function of major histocompatibility complex (MHC) molecules?
Correct Answer: B
Rationale: MHC molecules present peptide antigens to T cells, enabling adaptive immune recognition.
Question 2 of 5
Each antibody molecule contains heavy chains and light chains.
Correct Answer: D
Rationale: Each antibody has two heavy and two light chains, forming a Y-shaped structure.
Question 3 of 5
Which of the following binds to an Fc receptor on mast cells and basophils?
Correct Answer: C
Rationale: IgE binds Fc receptors on mast cells and basophils, mediating allergic responses.
Question 4 of 5
What color light is emitted when antigens are exposed to UV light after being treated with fluorescein isothiocyte (FITC), such as in the test for Treponema pallidum (syphilis) or to dye the Chicago river for a particular holiday (fluorescein)?
Correct Answer: D
Rationale: Fluorescein (FITC) emits green light when excited by UV light, commonly used in fluorescence microscopy and assays.
Question 5 of 5
Which of the following is NOT true regarding the mechanisms of generating antibody diversity?
Correct Answer: D
Rationale: Antibody diversity arises from multiple combinations of light and heavy chains, not a single combination.