This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemistry of Nucleotides , Subject name: Biochemistry
[{'content': 'Nucleotide includes - \nSelect and explain. \nA. Base + sugar, B. Base + phosphate group, C. Base + sugar + phosphate group, D. None', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Base + sugar + phosphate group o Nucleotides are monomeric units of nucleic acids. They are required for synthesis of nucleic acid. Each nucleotide is made up of: (i) A nitrogenous base, (ii) A sugar (pentose sugar) and (iii) A phosphate group (phosphoric acid). Nitrogenous base combines with a sugar to form nucleosides. The nucleoside combines with phosphoric acid to form a nucleotide.Nucleoside = Nitrogenous base (purine or pyrimidine)Q-+ Pentose sugar Q (ribose or deoxyribose)Nucleotide = Nucleoside + phosphate group (phosphoric acid)or= Nitrogenous base + Pentose sugar + Phosphate group", 'role': 'assistant'}]