This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of Purines and Pyrimidines, Subject name: Biochemistry
[{'content': 'Pyrimidine metabolism end product - \nSelect and explain. \nA. Urea, B. Uric acid, C. Beta alanine, D. Allantoin', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Beta alanine o Unlike the purine which are degraded to sparingly soluble product, uric acid, the end products of pyrimidine catabolism are highly water soluble : CO2, NH3, b- alanine and b- aminoisobutyrate.o Pseudouridine is excreted unchanged as it cannot be catabolized in human. Humans have no enzyme that can catabolize pseudouridine derived from degradation of t-RNA.", 'role': 'assistant'}]