艾弗雷等人使用了哪三种酶处理加热杀死的S型细菌?
高二生物章节14.1-14.3

Quiz
•
Biology
•
10th - 12th Grade
•
Easy
CHOY EN
Used 31+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
DNA聚合酶
RNA酶
DNA酶
蛋白酶
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
请问哪位科学家在1953年提出了DNA双螺旋结构模型?
赫尔希 (Hershey) 和蔡斯(Chase)
罗萨琳德 富兰克林 (Rosalind Franklin)
沃森(James Watson) 和克里克(Francis Crick)
格里菲斯(Griffith)
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1952年,赫尔希(Hershey)和蔡斯(Chase)用放射性同位素____和____来标记噬菌体的蛋白质和DNA,证实了DNA是遗传物质。
35S ......32P
32P.......35S
18F........32P
18F........35S
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
根据碱基互补配对原则,A与T通过____氢键相连配对,G与C通过______氢键相连配对。
四个。。。三个
一个。。。两个
三个。。。两个
两个。。。三个
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪一种不属于DNA的碱基?
尿嘧啶 (U)
胸腺嘧啶 (T)
胞嘧啶 (C)
鸟嘌呤 (G)
腺嘌呤 (A)
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
某个DNA分子中有鸟嘌呤(G)26%,在此DNA分子中腺嘌呤(A)占多少?
52
48
26
24
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
DNA经过3次复制后,子代DNA分子数量是____。
8
12
16
32
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