This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Biochemistry
[{'content': 'Large amount of SER is found in cells storing \nSelect and explain. \nA. Lipoproteins, B. Lipids, C. Glycogen, D. Amino acids', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Cholesterol(lipid) is synthesized in the smooth endoplasmic reticulum from acetyl CoA. The rate-limiting step is the formation of mevalonate from 3-hydroxy 3-methylglutaryl-CoA by HMG CoA reductase and lanosterol is the first cyclic intermediate.SER synthesise lipids whereas RER synthesise proteinsRef: Harper biochemistry: 267', 'role': 'assistant'}]