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

Only heavy chains
Constant regions
Only light chains
Variable regions

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Anti Bodies
Each IgA antibody molecule consists of

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

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Anti Bodies
Antibodies in the human immune system can identify approximately 108 different molecules Which one of the following is correct?

Many of these molecules are self-antigens
Most of these antibodies recognize small organic molecules
This diversity is generated from 108 different immunoglobin genes
Most of these antibodies recognize proteins

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Anti Bodies
The immunoglobulin fold is

a β-barrel composed of a three- and a four-stranded antiparallel β-sheet
found only in IgG molecules
both (a) and (b)
found six times in the IgG molecule

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