This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cholesterol and Lipoproteins, Subject name: Biochemistry
[{'content': 'In cholesterol synthesis, which is rate limiting amino acid \nSelect and explain. \nA. HMG CoA reductase, B. HMG CoA synthetase, C. 7 alpha hydroxylase, D. Phosphofructokinase', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e. HMG CoA reductase In cholesterol synthesis this step-HMG CoA - Mevalonate is the rate limiting step and HMG-CoA reductase is the rate limiting enzyme.HMG CoA synthetase is the rate limiting enzyme for ketone bodies synthesis* 7 alpha hydroxylase is for - Bile acid synthesis* Phosphofructokinase is for - Glycolysis*", 'role': 'assistant'}]