This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of carbohydrate, Subject name: Biochemistry
[{'content': 'Which of the enzyme of glycolysis is used in gluconeogenesis? \nSelect and explain. \nA. Glucokinase, B. PFK, C. Pyruvate kinase, D. Phosphohexose isomerase', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Step 2 of Glycolysis Glucose-6-phosphate is isomerised to fructose-6phosphate by phosphohexose isomerase. This is readily reversible. Since reversal of this reaction occurs in gluconeogenesisRef: DM Vasudevan, 7th edition, page no: 109', 'role': 'assistant'}]