This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Amino Acids Basics, Subject name: Biochemistry
[{'content': 'Purely glucogenic amino acid - \nSelect and explain. \nA. Isoleucine, B. Tyrosine, C. Lysine, D. Proline', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Proline GlucogenicKetogenicBoth glucogenic & ketogenico Alanineo Arginineo Aspargineo Aspartic acido Cysteineo Glutamineo Glutamic acido Glycineo Histidineo Methionineo Prolineo Serineo Threonineo Valineo Leucineo Lysineo Isoleucineo Phenylalaineo Tyrosino TryptophanNote : According to Harper 29th /e (P-282), lysine is both ketogenic and glucogenic. But all other textbooks have mentioned it as ketogenic.", 'role': 'assistant'}]