Anti Bodies
Each IgA antibody molecule consists of

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
two polypeptide chain and has one antigen binding site

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Anti Bodies
The main function of antibodies is to

chemically combine with the antigen which induces it, inactivate the antigen and protect the body from disease
protect the circulatory system
kill all the foreign bodies
generate antigens, thus conferring immunization

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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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Anti Bodies
Monoclonal refers to

the binding with same antigenic site with identical binding affinities
a single clone of antibody-producing cells
all the antibody molecules which are identical
All of these

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Anti Bodies
IgE provides

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

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