Anti Bodies
Antigenic determinants bind to which portions of an antibody?

Only light chains
Variable regions
Only heavy chains
Constant regions

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Anti Bodies
Each IgA antibody molecule consists of

four polypeptide chain and has two antigen binding site
two polypeptide chain and has one antigen binding site
three polypeptide chain and has two antigen binding site
two polypeptide chain and has two antigen binding site

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Anti Bodies
A polyclonal antibody response

is produced only in response to polymeric antigens
is produced by several B cells recognizing different pitopes on the same antigen
violates clonal selection
occurs during the lag phase of the immune response

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