Uric acid is formed by: (A) Catabolism of proteins, (B) Catabolism of ketones, (C) Catabolism of purines, (D) Catabolism of pyrimidines
Answer is C. Uric acid the end product of purine catabolismis a strong reducing agent. Its role as an antioxidant is paicularly significant in the upper respiratory tract REF : DM VASUDEVAN TEXTBOOK ;8th EDITION ;Page no:547 and 548