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: Microbiology
[{'content': 'In prokaryotes, which of the following is present: \nSelect and explain. \nA. Nucleolus, B. ER, C. Golgi bodies, D. Muramic acid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Muramic Acid is one of the important components of the peptidoglycan wall present in the cell wall of prokaryotic cells', 'role': 'assistant'}]