ATI RN
Questions on the Immune System Questions
Question 1 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 2 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 3 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.
Question 4 of 5
Neutrophils, lymphocytes, basophils, eosinophils, and monocytes are examples of ______?
Correct Answer: A
Rationale: These are cellular barriers of innate immunity; not cytokines or physical .
Question 5 of 5
B cells that produce and release large amounts of antibody are called:
Correct Answer: C
Rationale: The definition of plasma cell is 'B Cell that is capable of producing large amount of antibodies', distinguishing them from memory or killer cells.