DNA变性时其结构变化表现为A.磷酸二酯键断裂 B.N—C糖苷键断裂 C.碱基内C—C键断裂 D.戊糖内C—C键断裂 E.对应碱基间氢键断裂

作者: tihaiku 人气: - 评论: 0
问题 DNA变性时其结构变化表现为
选项 A.磷酸二酯键断裂 B.N—C糖苷键断裂 C.碱基内C—C键断裂 D.戊糖内C—C键断裂 E.对应碱基间氢键断裂
答案 E
解析 [考点]DNA双螺旋结构 [分析]DNA变性指双螺旋碱基间的氢键的断开,是次级键的断裂。

相关内容:变性,时其,结构,变化,磷酸,二酯,糖苷,碱基,戊糖,氢键

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