This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'Key glycolytic enzymes \nSelect and explain. \nA. Phosphofructokinase, B. Hexokinase, C. Pyruvate kinase, D. All of these', 'role': 'user'}, {'content': "Answer: D \nExplanation: Hexokinase & 'c' i.e., Pyruvate kinase\n\nGlycolysis is regulated at 3 steps which are irreversible. These reactions are catalyzed by following key enzymes: (1) Ilexolunase and glucokinase, (2) Phosphofructokinase - I, and (3) Pyruvate kinase.", 'role': 'assistant'}]