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': 'What supplies ammonia to liver ? \nSelect and explain. \nA. Arginine, B. Alanine, C. Lactate, D. Pyruvate', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Alanine Transpo of alanine from muscle to liver (glucose-alanine cycle) has two functions :?Providing substrate for gluconeogenesisTranspo of ammonia (NH4+) to liver for urea synthesis.", 'role': 'assistant'}]