Allantoin is the end product of metabolism of -: (A) Glycogen, (B) Purine, (C) Pyrimidine, (D) Histidine
Answer is B. Ans. is 'b' Le., Purine o In non-primate mammals, end product of purine metabolism is allantoin due to presence of enzyme uricase. Uricase convenes uric acid to allantoin.o Humans lack the enzyme uricase. Therefore, end product of purine catabolism in humans is uric acid.