| 释义 |
nitrogenous base [英] [naɪˈtrɒdʒɪnəs beɪs] [美] [naɪˈtrɑdʒənəs bes] [短语] 含氮碱基 词频排名 51649/55435 学习人数 91 难度等级 9/10 认知比例 35.29% 例句 a nitrogenous base found in DNA 存在于DNA的一种含氮碱基 助记 联想 nucleotide 核苷酸: "a sugar, a phosphate group and nitrogenous base:" "purine 嘌呤(adenine, guanine) " "pyrimidine 嘧啶 (thymine/uracil, cytosine→import)" sugar-phosphate backbone = five-carbone sugar(deoxyribose or ribose)
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