Which of the components listed below forms the B c

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ATI RN Test Bank

Which of the components listed below forms the B cell antigen receptor?

A. IgG antibody B. Ig Î± C. Ig Î² D. All of the above

Correct Answer: D

Rationale: The BCR includes IgÎ± and IgÎ² signaling proteins with the antibody (e.g., IgG), making all components correct.

B-cells do which of the following?

A. Act as antigen-processing cells B. Respond to antigens by making antibodies C. Proliferate and differentiate into plasma cells D. All of the above

Correct Answer: D

Rationale: B-cells process antigens , produce antibodies , and become plasma cells , so all are true.

Agammaglobulinemia is an immunodeficiency disease due to a deficiency in:

A. B cells B. MHC C. IgE D. Cytokines

Correct Answer: A

Rationale: Agammaglobulinemia lacks B cells , impairing antibodies; not T cells or others (B, C, D).

Which of the following antibodies directly participate in the opsonization process?

A. IgM B. IgG C. IgA D. IgE

Correct Answer: B

Rationale: IgG opsonizes via Fc receptors; IgM aids complement, not direct.

Which of the following immunity is long-lasting and sometimes life-long?

A. Innate immunity B. Acquired immunity C. Passive immunity D. Active immunity

Correct Answer: D

Rationale: Active immunity can be lifelong due to memory; passive is short-term.

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