Question

Main antibody of both primary and secondary immune response. Protects mucosal barriers. Involved in allergies. Along with IgM, this is a B cell receptor. Activates complement. A. IgG B. IgE C. IgM D. IgD E. IgA

Answer 1

Answer: A. IgG

Explanation:

Immunoglobulin G or IgG is a kind of antibody which shows both primary and secondary immune response. It is present in 75% of human serum. It is a common type of antibody in human blood circulation. It is released by the plasma B cells. It protects the mucosal barriers and it is also involved in the allergic response. It exhibit two antigen binding sites.