ATI RN
Questions on the Immune System Questions
Question 1 of 5
Which of the following statements is true for neutrophils?
Correct Answer: B
Rationale: Neutrophils are the most abundant WBCs in blood, excelling in phagocytosis, not antigen presentation (DCs) or viral cell killing (NK cells).
Question 2 of 5
The CD3 component of the TCR complex is involved in:
Correct Answer: B
Rationale: CD3 transduces signals via ITAM phosphorylation, not antigen recognition or initial APC interaction.
Question 3 of 5
Monoclonal antibodies are produced by
Correct Answer: A
Rationale: Hybridomas , fused plasma and myeloma cells, produce monoclonal antibodies; others (B, C, D) don't inherently do so.
Question 4 of 5
A positive tuberculin test is an example of
Correct Answer: B
Rationale: Tuberculin test is Type IV , T-cell-mediated; not Type I or dermatitis variants (C, D).
Question 5 of 5
Which of the following immunoglobulin is produced early in the primary response to infection?
Correct Answer: D
Rationale: IgM is the first antibody in primary response; IgG follows later.