The antigen binding site of an antibody is present at

Antigen binding site on antibodies is at

Antigen binding site in an antibody is found between:

A portion of the antigen, the antigenic determinant, which can bind the antigen binding site (paratope) of the antibody is

Read the following matches and mark the correct option : I. Antigen binding site on antibody : contains a variable region of a heavy chain only II. Humoral immunity: due to antibodes, secreated by plasma cell III. Graft rejecation: due to cell-mediated immunity response IV. Colostrum : provides active immunty to infacts or newborns.

The antigen -binding sites are present where on the antibody molecule

Which one of the following combinations acts as a usual antigen binding site of an antibody/