ATI RN
Pediatric Immunization NCLEX Questions Questions
Question 1 of 5
Which of the following has the surface marker CD34 instead of the surface marker CD19, during B cell development?
Correct Answer: A
Rationale: CD34 is on hematopoietic stem cells; CD19 appears at the pro-B stage.
Question 2 of 5
Where are double-positive (DP) cells found?
Correct Answer: C
Rationale: DP cells reside in the thymus cortex, where they undergo selection processes.
Question 3 of 5
The γδ T cell acts as a part of the first line of defense, recognizing microbial invaders. They appear to recognize commonly occurring microbial pathogens. Where can γδ T cells be found?
Correct Answer: C
Rationale: γδ T cells are prevalent in epithelial tissues like skin and gut mucosa for innate defense.
Question 4 of 5
T cell activation of TH1 leads to ___ antibody production and opsonization (or macrophage activation). Activation of TH2 leads to ___ antibody production and activation of mast cells and eosinophils.
Correct Answer: B
Rationale: TH1 drives IgG for opsonization/macrophage activation; TH2 drives IgE for mast cell/eosinophil activation.
Question 5 of 5
Antiapoptotic molecules are encoded by the death-inhibiting family of bcl genes.
Correct Answer: A
Rationale: bcl genes encode anti-apoptotic proteins, inhibiting cell death.