This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urea cycle, Subject name: Biochemistry
[{'content': 'In urea cycle, hydrolysis occurs during: \nSelect and explain. \nA. Cleavage of Arginine, B. Cleavage of ornithine, C. Formation of Argininosuccinate, D. Formation of citrulline', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Arginase the final enzyme of urea cycle is a hydrolase i.e. it uses water to break the bond in arginine It breaks arginine into urea and ornithine Urea is transpoed to kidneys from liver blood and then excreted in urine', 'role': 'assistant'}]