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': 'Nucleosomes are \nSelect and explain. \nA. DNA+RNA, B. DNA+Histones, C. RNA+Histones, D. DNA+RNA+Histones', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Nucleosomes : The double stranded DNA wraps twice around a histone octamer formed by H2A, H2B, H3 and H4. This super - twisted helix forms a spherical paicle of 10nm diameter ; called Nucleosome. The function of the Nucleosomes is to condense DNA ; this arrangement also stabilises the DNA. REF : DM.VASUDEVAN.TEXTBOOK; SEVENTH EDITION ; PAGE NO :577', 'role': 'assistant'}]