This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of protein and amino acid, Subject name: Biochemistry
[{'content': 'Carbamoyl phosphate is used in \nSelect and explain. \nA. Urea, B. Uric acid, C. Pyruvic acid, D. Stearic acid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: One molecule of ammonia and co2 condenses to form Carbomy phoshate in presence of 2 molecules of ATP and carbomyl phosphate synthetase II enzyme. this carbomyl phoshate is transferred to NH2 group of ornitine to form Citrulline in urea cycle.Ref: DM Vasudevan - Textbook of Biochemistry, 7th edition, page no: 203', 'role': 'assistant'}]