This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lipids, Subject name: Biochemistry
[{'content': 'The enzyme is the rate limiting enzyme in cholesterol synthesis is: \nSelect and explain. \nA. HMG CoA synthetase, B. HMG CoA reductase, C. HMG CoA lyase, D. Catalase', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. (b) HMG CoA reductaseRef: Harper's Biochemistry, 30th ed. pg. 267* HMG CoA reductase is the rate limiting ezyme in cholesterol synthesis.* HMG CoA Synthetase is involved in the formation of ketone bodies while HMG CoA lyase is involved also in the ketogenesis and also in the processing of leucine.* Catalase on the other hand is an oxidoreductase which is involved in the conversion of hydrogen peroxide to water and oxygen.", 'role': 'assistant'}]