题目内容

催化dUMP转变dTMP的酶是

A. 核苷酸激酶
B. 核苷酸还原酶
C. 胸苷酸合成酶
D. 脱氧胸苷激酶
E. 甲基转移酶

查看答案

搜索结果不匹配？点我反馈

更多问题

HGPRT参与的反应是

A. 嘌呤核苷酸从头合成
B. 嘧啶核苷酸从头合成
C. 嘌呤核苷酸补救合成
D. 嘧啶核苷酸补救合成
E. 嘌呤核苷酸分解代谢

关于6-巯基嘌呤的叙述，不正确的是

A. 抑制次黄嘌呤生成IMP
B. 抑制IMP生成AMP
C. 抑制IMP生成GMP
D. 抑制腺苷生成AMP
E. 抑制鸟嘌呤生成GMP

Questions 27-31Reading Passage 3 has six paragraphs, A-F.Which paragraph contains the following informationWrite the correct letter, A-F, in boxes 27-31 on >’our answer sheet. A model for suburban development in the latter half of the 20th century（）

Questions 32-38Do the following statements agree with the information given in Reading Passage 2In boxes 32-38 on your answer sheet, write A good principle for ecological preservation is to avoid human interference.（）