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': 'Acetyl CoA carboxylase is activated by \nSelect and explain. \nA. Malonyl CoA, B. Citrate, C. Palmitoyl CoA, D. Acetoacetate', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Citrate\n\nAcetyl-CoA carboxylase is an allosteric enzyme, it is activated by citrate and inhibited by long-chain acyl-CoA (palmitoyl CoA).', 'role': 'assistant'}]