ATI RN
Immune System NCLEX Questions Quizlet Questions
Question 1 of 5
Which of the options below best completes the following statement: NK cells are of origin and target for their elimination.
Correct Answer: A
Rationale: NK cells, of lymphoid origin, target altered host cells (e.g., virus-infected or cancerous), not bacteria or antigens directly.
Question 2 of 5
Mature α:β T cells:
Correct Answer: D
Rationale: Mature αβ T cells express CD3, are single-positive (CD4 or CD8), and migrate peripherally.
Question 3 of 5
Monoclonal antibodies are routinely used in all of the following EXCEPT
Correct Answer: D
Rationale: Monoclonal antibodies aid leukemia , pathogen , and tumor studies; manipulation is less routine.
Question 4 of 5
Which disease would be most similar to AIDS in its pathology?
Correct Answer: A
Rationale: SCID mimics AIDS with broad T/B cell loss; others (B, C, D) are narrower defects.
Question 5 of 5
Complement fixation is one of the most crucial host defenses against infections. The complement is activated by;
Correct Answer: C
Rationale: IgM and IgG activate complement; not IgM only or all classes .