Which of the following determines the class of immunoglobulin?: (A) L-chain, (B) H-chain, (C) J-chain, (D) Variable region
Answer is B. Based on the constant region of the heavy chains (g, a, m, d and e);Ig has been classified into five types; lgG, IgA, IgM, IgD and IgE respectively. Differences inheavy chain (H chain) polypeptides allow these immunoglobulinsto function in different types of immune responses and at paicular stages of the immune response.