ATI RN
Pediatric Immune Disorder Test Questions Questions
Question 1 of 5
Which of the following Antibodies occurs as a pentameric structure?
Correct Answer: A
Rationale: IgM is the only antibody that naturally occurs as a pentamer, consisting of five monomeric units linked by a J chain, enhancing its ability to bind multiple antigens simultaneously.
Question 2 of 5
A medical student wants to perform a study on MACROPHAGES type 1, the best way to get these cells is by
Correct Answer: C
Rationale: M1 macrophages are pro-inflammatory and induced by IFN-γ and LPS stimulation of monocytes, not IL-10 (which promotes M2). Answer provided as C based on immunology.
Question 3 of 5
which of the following cells is not from a myeloid origin
Correct Answer: C
Rationale: NK cells are lymphoid, not myeloid; others (macrophages, neutrophils, mast cells) are myeloid-derived.
Question 4 of 5
Which of the following BEST describes cytokines?
Correct Answer: B
Rationale: Cytokines are signaling proteins that recruit and activate immune cells.
Question 5 of 5
Depressed levels of MHC class I molecules on virus infected host cells can be detected by
Correct Answer: D
Rationale: NK cells detect and kill cells with reduced MHC class I, a viral evasion strategy.