This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of nucleic acids, Subject name: Biochemistry
[{'content': 'Nucleotides are \nSelect and explain. \nA. Heterocyclic Compounds, B. N-Glycosides, C. Phosphorylated Nucleosides, D. O-Glycosides', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Purines & Pyrimidines Are Heterocyclic Compounds.Nucleosides Are N-Glycosides.Nucleotides Are Phosphorylated Nucleosides .Ref: Harper&;s Biochemistry; 30th edition; Chapter 32; Nucleotides', 'role': 'assistant'}]