ATI RN
Immune System NCLEX Questions Quizlet Questions
Question 1 of 5
One kind of vaccine consists of
Correct Answer: C
Rationale: Vaccines often use weakened or inactivated pathogens to stimulate immunity, not antibodies, B cells, or antibiotics.
Question 2 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 3 of 5
Complete the following sentence. Initiation of the germinal centre reaction is mediated by the.
Correct Answer: B
Rationale: CD40 ligation by T cells activates B cells to start the germinal center reaction, key for affinity maturation.
Question 4 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 5 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.