ATI RN
Immune System Multiple Choice Questions and Answers Questions
Question 1 of 5
Which of the following is an effect of interleukin-2?
Correct Answer: A
Rationale: Interleukin-2, from helper T cells, promotes T cell proliferation, not mast cell histamine release, APC stimulation, or macrophage phagocytosis.
Question 2 of 5
What is the major structural difference between B cell antigen receptor (BCRs) and secreted antibody?
Correct Answer: B
Rationale: BCRs have a transmembrane tail, while secreted antibodies lack it, retaining two binding sites.
Question 3 of 5
The following statement correctly describes a common feature of T & B cell development:
Correct Answer: B
Rationale: Both T and B cells rearrange receptor genes stepwise for diversity, not multiple specificities or abundant self-reactivity.
Question 4 of 5
Cell-associated differentiation antigens (CDs) are functional cell surface proteins or receptors that can be measured in situ.
Correct Answer: D
Rationale: All statements (A, B, C) about CDs are true, making D correct; CDs aid disease management, are low in serum, and many are known.
Question 5 of 5
An example of type III immune complex disease is:
Correct Answer: C
Rationale: Serum sickness is Type III, immune complex-mediated; not dermatitis , rejection , or atopy .