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': 'Rough endoplasmic reticulum is the site of synthesis for \nSelect and explain. \nA. Protein, B. Cholesterol, C. Carbohydrate, D. Fat', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Rough endoplasmic reticulum is concerned with Protein synthesis*\nInitial folding of the polypeptide chains with the formation of disulfide bonds Smooth endoplasmic reticulum is concerned with Steroid synthesis\n* Detoxication processes As sarcoplasmic reticulum plays important role in skeletal and cardiac muscle contraction *', 'role': 'assistant'}]