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

Only heavy chains
Only light chains
Variable regions
Constant regions

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Anti Bodies
A polyclonal antibody response

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

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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 proteins
Most of these antibodies recognize small organic molecules
This diversity is generated from 108 different immunoglobin genes

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Anti Bodies
Each IgA antibody molecule consists of

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

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Anti Bodies
IgE provides

complement killings of the cells and phagocytosis
All of these
secretions in the body
immunity against some parasites

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