This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'Which of the following enzymes is involved in the urea cycle? \nSelect and explain. \nA. Asparginase, B. Glutaminase, C. Argininosuccinate synthetase, D. Glutamate dehydrogenase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Argininosuccinate synthase links aspartate and citrulline via the amino group of aspartate and provides the second nitrogen of urea.', 'role': 'assistant'}]