Q. Which one of the following statements is correct with respect to immunity?
(a) Antibodies are protein molecules, each of which has four light chains
(b) Rejection of a kidney graft is the function of B-lymphocytes
(c) Preformed antibodies need to be injected to treat the bite by a viper snake
(d) The antibodies against small pox pathogen are produced by T-lymphocytes
Solution : Correct option : C A. Anti-snake venom is made by collecting venom from the snake and injecting small amounts of it usually into a horse. The antibodies that form in the horse blood are then collected and used to treat a snake bite case by injecting directly to the affected person.
B. Antibodies against smallpox are produced by B-lymphocytes.
C. Antibodies contain 2 light chains and 2 heavy chains.
D. Rejection of a kidney graft is a function of T-lymphocytes. So, the correct answer is, ‘Preformed antibodies need to be injected to treat the bite by a viper snake’.
