DNA
Quiz
•
Biology
•
11th Grade
•
Practice Problem
•
Medium
Wai Kwan
Used 10+ times
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7 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
圖展示一個DNA模型:
以下哪個組合最有可能分辨出W、X、Y和Z各分子?
W:糖
X:磷酸鹽
Y:胞嘧啶
Z:胸腺嘧啶
W:糖
X:磷酸鹽
Y:胞嘧啶
Z:鳥嘌呤
W:磷酸鹽
X:糖
Y:腺嘌呤
Z:胸腺嘧啶
W:磷酸鹽
X:糖
Y:腺嘌呤
Z:鳥嘌呤
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
以下哪些核苷酸的部分組成多核苷酸鏈的骨幹?
糖和鹼基
糖和磷酸鹽
鹼基和磷酸鹽
鹼基、糖和磷酸鹽
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
不同的DNA核苷酸之間,存在差異的部分是
鹼基。
核糖。
去氧核糖。
磷酸鹽團基。
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
某真核細胞的DNA含有20%腺嘌呤(A)鹼基。這個DNA的胞嘧啶(C)鹼基含量百分率是多少?
60%
40%
30%
20%
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
酵母的一個DNA分子中,有30%的含氮鹼基是鳥嘌呤(G)。在這個DNA分子中,胞嘧啶(C)和胸腺嘧啶(T)的比例是多少?
1:1
1:2
3:2
3:7
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
參考以下有關發現DNA構造的段落,回答下題:
以上事件展示了以下哪些科學本質的特質?
(1) 一個良好的實驗必須包括精心設計的對照組。
(2) 科學家既會彼此競爭,也會互相協作。
(3) 科學需要想像力和創意。
只有(1)和(2)
只有(1)和(3)
只有(2)和(3)
(1)、(2)和(3)
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
就華生和克里克所提出的DNA分子結構而言,以下哪項描述是正確的?
兩條鏈以相反方向排列。
鹼基把核苷酸連起形成鏈。
組成核苷酸的糖有兩類。
組成核苷酸的磷酸有最少四類。
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