
DNA

Quiz
•
Biology
•
12th Grade
•
Medium
TEY MIIN郑慧敏
Used 4+ times
FREE Resource
5 questions
Show all answers
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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