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

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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
Papain digest IgG into

three Fab fragments and two Fc fragments
two Fab fragments and two Fc fragments
two Fab fragments and one Fc fragment
three Fab fragments and three Fc fragments

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Anti Bodies
IgE provides

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

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