ATI RN
Immune System Multiple Choice Questions and Answers PDF Questions
Question 1 of 5
Which is the least abundant granulocyte in peripheral blood?
Correct Answer: A
Rationale: Basophils are the least abundant granulocytes in blood (<1%), unlike neutrophils (most abundant) or eosinophils; mast cells reside in tissues.
Question 2 of 5
A naïve lymphocyte is:
Correct Answer: C
Rationale: Naïve lymphocytes are mature, antigen-unexposed cells ready for activation.
Question 3 of 5
The first tenet of clonal selection theory relies SPECIFICALLY on
Correct Answer: D
Rationale: Clonal selection posits each B-cell clone has a unique receptor; joinings , mutations , and splicing support diversity, not the first tenet.
Question 4 of 5
Graft versus host disease results when the recipient lacks or has a poor immune system, and the donor organ and recipient express different:
Correct Answer: A
Rationale: GVHD occurs due to HLA mismatch ; T cells mediate, but HLA drives it.
Question 5 of 5
The antibody which is found in secretions is:
Correct Answer: D
Rationale: IgA is predominant in secretions; others (A-C) are not.