This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: Biochemistry
[{'content': 'Glucose can be synthesized from all except \nSelect and explain. \nA. Amino acids, B. Glycerol, C. Acetoacetate, D. Lactic acid', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Substrates of gluconeogenesis (1) Pyruvate (2) Lactate (3) Glycerol (4) Propionic Acid (5) Glucogenic amino acid *most glucogenic amino acid -alanine (6) Both ketogenic and glucoenic amino acid (7) Any TCA intermediate (acetyl coA -not intermediate of TCA so never form gulcose) Amino acid (1) Ketogenic-leucine > lysine (2) Both ketogenic and glucogenic -t-tryptophan tyrosine threonine i-isoleucine p-phenylalanine (3) Glucogenic -other 13 amino acid', 'role': 'assistant'}]