6. Which of the following theory of antibody production is most widely accepted?

A. Side chain theory
B. Clonal selection theory
C. Direct template theory
D. Indirect template theory

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7. Which is the most efficient complement fixing class of antibody?

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

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8. The class of immunoglobulin, most abundant in body is

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

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9. Which is not a function of IgG?

A. Major antibody in serum
B. First antibody type produced against an antigen during the primary antibody response
C. Activates or fixes complement
D. Involved in opsonization

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10. J chain is present in

A. IgA
B. IgM
C. Both (a) and (b)
D. IgE

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