This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Classification and metabolism of amino acids, Subject name: Biochemistry
[{'content': 'Which of the following amino acid can be synthesised from a glycolytic intermediate in human body? \nSelect and explain. \nA. Aspaate, B. Glutamate, C. Histidine, D. Serine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Serine is a dietary non-essential amino acid since it can be synthesised from the glycolytic intermediate 3-phosphoglycerate. Oxidation of 3-phosphoglycerate by a dehydrogenase, conves it to 3-phosphohydroxypyruvate. Transamination and subsequent dephosphorylation then form serine.', 'role': 'assistant'}]