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

ANSWER DOWNLOAD EXAMIANS APP

Anti Bodies
The immunoglobulin fold is

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

ANSWER DOWNLOAD EXAMIANS APP

Anti Bodies
The main function of antibodies is to

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

ANSWER DOWNLOAD EXAMIANS APP