ATI RN
Pediatric Immunization Test Questions Questions
Question 1 of 5
which of the following initiates the classical pathway of the complement system
Correct Answer: A
Rationale: C1q binds to antigen-antibody complexes, initiating the classical complement pathway by activating C1r and C1s.
Question 2 of 5
True about GVHD
Correct Answer: B
Rationale: GVHD doesn't occur in identical twins due to genetic identity; it's driven by donor T cells, not recipient ones.
Question 3 of 5
Wrong about Macrophages
Correct Answer: B
Rationale: Macrophages present antigens to activate T cells but are less efficient than dendritic cells for naïve T cell activation.
Question 4 of 5
The difference between tolerance and immunity depends upon the maturation status of the antigen presenting dendritic cells. What is the T-cell outcome of an antigen presentation event by a mature dendritic cell?
Correct Answer: C
Rationale: Mature dendritic cells activate T cells by presenting antigens with co-stimulatory signals.
Question 5 of 5
Activation of the complement system directly causes?
Correct Answer: A
Rationale: Complement activation leads to opsonization, enhancing phagocytosis.