核酸对紫外线的最大吸收峰是A.200nm B.220nm C.240nm D.260nm E.280nm

作者: tihaiku 人气: - 评论: 0

问题核酸对紫外线的最大吸收峰是

选项 A.200nm B.220nm C.240nm D.260nm E.280nm

答案 D

解析 [考点]核酸结构 [分析]核酸所含嘌昤和嘧啶分子具有共轭双键，在260nm波长处有最大吸收峰。

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