This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biological Function of Proteins, Subject name: Biochemistry
[{'content': 'Rough endoplasmic reticulum is site of synthesis for \nSelect and explain. \nA. Protein, B. Cholesterol, C. Carbohydrate, D. Fat', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e. Protein Rough endoplasmic reticulum is concerned withProtein synthesis*Initial folding of the polypeptide chains with the formation of disulfide bondsSmooth endoplasmic reticulum is concerned withSteroid synthesis*Detoxification processesAs sarcoplasmic reticulum plays important role in skeletal and cardiac muscle contraction *", 'role': 'assistant'}]