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

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

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Anti Bodies
Each IgA antibody molecule consists of

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

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Anti Bodies
IgE provides

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

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