ATI RN
Pediatric Immune Disorder Test Questions Questions
Question 1 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 2 of 5
Which of the following BEST describes cytokines?
Correct Answer: B
Rationale: Cytokines are signaling proteins that recruit and activate immune cells.
Question 3 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.
Question 4 of 5
Which of the following C1 subunit has the catalytic activity that cleaves C4 and C2 complement proteins?
Correct Answer: C
Rationale: C1s, activated by C1r, cleaves C4 and C2 to form C3 convertase.
Question 5 of 5
Which one of the following is NOT a primary function of phagocytes?
Correct Answer: C
Rationale: Perforins and granzymes are used by cytotoxic T cells and NK cells, not phagocytes like macrophages or neutrophils.