Which portion of the antibody's structure determines the antibody's class?
A) variable region
B) heavy chain
C) constant region
D) disulfide bonds
E) light chain

Question

Quizplus · Accepted Answer

The constant region of the antibody's heavy chain determines the class of the antibody. There are five main classes of antibodies (IgM, IgG, IgA, IgD, and IgE) and each class has a distinct constant region in its heavy chain. Therefore, the constant region is what determines the class of the antibody.

Which Portion of the Antibody's Structure Determines the Antibody's Class