一种含氮的分子，嘌呤碱或者是嘧啶碱，它们和戊糖还有磷酸一起构成核苷酸，核苷酸是核酸的基本结构单位。
A nitrogenous molecule, either a PYRIMIDINE or a PURINE, that combines with a pentose sugar and phosphoric acid to form a nucleotide, the fundamental unit of nucleic acids.
一个核的核糖和下一个磷酸盐相连，形成核糖核酸的支柱。
The ribose of one nucleotide joins with the phosphate of the next to form the RNA backbone.
由于核酸含磷酸基团、碱基、脱氧核糖羟基以及双螺旋结构，使金属络合物容易在这些位置发生多元络合反应。
Since the nucleic acids contain phosphonic group, basic group, desoxyribose hydroxy and double spiral species in nucleic acids, nucleic acids form easy multicomponent complexes with metal complex.
遗传物质DNA和RNA是磷酸二酯，磷酸酯基团是连接核酸的桥连基团。
DNA and RNA as the heredity matters, they belong to phosphoric di-ester that is their bridge linkage group.
遗传物质DNA和RNA是磷酸二酯，磷酸酯基团是连接核酸的桥连基团。
DNA and RNA as the heredity matters, they belong to phosphoric di-ester that is their bridge linkage group.
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