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DNA

Authored by TEY MIIN郑慧敏

Biology

12th Grade

Used 4+ times

DNA
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5 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

若一段DNA上的腺嘌呤(A)占15%,则鸟嘌呤(G)会占______%

15

35

70

85

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

若双链DNA中的腺嘌呤(A)占15%,则一条单链中胞嘧啶(C)所占比例的最大值是________

15%

35%

70%

85%

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

已知1个DNA分子中有3000个碱基对,其中胸腺嘧啶有2200个,这个DNA分子中鸟嘌呤的数目是________。

800

2200

1600

以上皆非

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

一条链中(A+C)/(T+G)=0.5,互补链中同为(A+C)/(T+G)的比值是:

0.5

1

2

2.5

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

一条链中(A+T)/(C+G)=0.5,互补链中同为(A+T)/(C+G)的比值是:

0.5

1

2

2.5

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