Specific immunity can be acquired either naturally or artificially and involves

Correct Answer: A

Rationale: Specific immunity involves antibodies , antigens , and complement , all part of adaptive responses; thus, all of the below is correct.

Correct Answer: B

Rationale: Self-tolerance distinguishes self from non-self; specific immunity is broader.

Correct Answer: B

Rationale: IgM is the first antibody in primary response; IgG follows.

Correct Answer: C

Rationale: Differentiation of B Cell takes place in bone marrow and functional B cells are found in Gut associated Lymphoid tissue (GALT), while T cells mature in the thymus.

Correct Answer: D

Rationale: Lysozyme splits peptidoglycan in bacterial cell walls, an enzymatic action, not complement activation.