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': 'Enzymes increase reaction rates by \nSelect and explain. \nA. Altering the free energy of the action, B. Inhibiting the backward reaction, C. Enhancing the forward reaction, D. Decreasing the energy of activation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: MECHANISM OF ENZYME ACTION\nExplained by different theories:\n\nLowering of activation energy\nMichaelis-Menten theory\nFischer’s Template theory\nKoshland’s Induced Fit theory.\n\nLowering of Activation Energy\nEnzymes lower the activation energy. Activation energy is\xa0defined as the energy required to convert all molecules of a reacting substance from ground state to transition state.', 'role': 'assistant'}]