1.下列化合物中,不是组成DNA的物质是( )

《DNA的结构》

Quiz
•
Biology
•
1st Grade
•
Medium

雅桐 赵
Used 5+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
10 sec • 10 pts
A.核糖
B.磷酸
C.鸟嘌呤
D.胞嘧啶
2.
MULTIPLE CHOICE QUESTION
10 sec • 10 pts
2.在DNA分子中,能与鸟嘌呤互补配对的含氮碱基是( )
A.腺嘌呤
B.胞嘧啶
C.胸腺嘧啶
D.胞嘧啶或胸腺嘧啶
3.
MULTIPLE CHOICE QUESTION
10 sec • 10 pts
3.排列在DNA分子外侧,构成基本骨架的物质是( )
A.碱基对
B.脱氧核糖和磷酸
C.碳链
D.核糖和磷酸
4.
MULTIPLE CHOICE QUESTION
10 sec • 10 pts
4.在DNA分子的一条单链中,相邻的碱基A与T是通过下列哪种结构连接起来的( )
A.氢键
B.-脱氧核糖-磷酸-脱氧核糖-
C.肽键
D.-磷酸-脱氧核糖-磷酸-
5.
MULTIPLE CHOICE QUESTION
10 sec • 10 pts
5.一条DNA单链的序列是5'-CAATGG-3',那么它的互补链的序列是
A. 5'-TGGCAA-3'
B. 5'-GTTACC-3'
C. 5'-AACTTG-3'
D. 5'-CCATTG-3'
6.
MULTIPLE CHOICE QUESTION
10 sec • 10 pts
6.现代刑侦领域中,刑侦人员只需要一滴血或一根头发等样品,就可以通过DNA指纹鉴定来确认身份。这主要是利用了DNA分子的
A.多样性
B.特异性
C.高效性
D.统一性
7.
MULTIPLE CHOICE QUESTION
10 sec • 10 pts
7.DNA分子中,两条链上排列顺序不变的是
A.碱基对排列
B.四种脱氧核苷酸
C.脱氧核糖和磷酸
D.碱基和磷酸
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