Uric acid is formed in humans in -

Ans. is 'b' i.e.,GIT mucosa Uric acid is produced in intestinal mucosal cells from dietary purines.The sources of purine nucleotides in the body are :?Synthesis of purine rings by body itself.Presense of purines in diet (dietary purines).this the usual source of purines also pyrimidines for the use of body.Human body is capable of synthesizing the purine and the pyrimidine rings de novo (anew) and also by salvaging (recycling) the nitrogenous bases arising from degardation of nucleic acid.Brain, RBCs and polymorphonuclear leucocytes cannot produce purines by de novo synthesis. Almost all other cells can produce purines by de novo synthesis