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
End product of purine metabolism is? 
Select and explain. 
A. Alanine, B. Uric acid, C. Ammonia, D. Allantoin
B: Uric acid
Answer: B: Uric acid 
Explanation: ANSWER: (B) Uric addREF: Biochemistry 3rd edition by S C Rastogi page 366,In humans and higher primates, uric acid is the final oxidation (breakdown) product of purine metabolism and is excreted in urine.AUantoin is a natural end product of purine metabolism in most mammals other than humans.