This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Structure and function of protein, Subject name: Biochemistry
[{'content': 'Essential amino acid amongst the following \nSelect and explain. \nA. Arginine, B. Lysine, C. Threonine, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Essential amino acids: These are the ones which are not synthesised by the body and must be taken in diet. They include valine, leucine, isoleucine, phenylalanine, threonine, tryptophan, methionine and lysine. For remembering the following formula is used--MATT VIL PHLY.Ref: Textbook of medical biochemistry, MN Chatterji, 8th edition, page no: 80', 'role': 'assistant'}]