Complement attaches to immunoglobulin at:: (A) Aminoterminal, (B) Fab region, (C) Variable region, (D) Fc fragment
Answer is D. Ans. is 'd' i.e., Fc fragment (Ref: Ananthanarayan, 8th/e, p. 97)* Fc fragment consist of parts of both H chains, composed of carboxyterminal portion of the H chains and it determines biological properties of Ig molecule such as complement fixation, placental transfer, skin fixation and catabolic rate.