112學測複習全
Quiz
•
Biology
•
12th Grade
•
Practice Problem
•
Hard
葉東茂 葉東茂
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39 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
分子生物學的中心法則與DNA、RNA及蛋白質有關,此三種化合物的關係,下列何者正確?
A
B
C
D
Answer explanation
解答 B
解析 DNA(基因)RNA,mRNA多肽鏈(蛋白質)
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
對真細菌和古菌的比較,下列何者正確?
A
B
C
D
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
在進行重組DNA時,我們通常將外源基因與載體置入何種生物內,以進行複製、轉錄、轉譯,進而合成蛋白質?
人
細菌
牛
病毒
Answer explanation
解答 B
解析 病毒無法直接合成蛋白質,也不會將重組DNA轉殖入人或牛體內
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
目前最進步的光學顯微鏡之放大倍率大約為幾倍?
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
豌豆莖的高、矮由一對等位基因所控制,高莖等位基因為顯性,矮莖等位基因為隱性,現有一高莖豌豆與矮莖豌豆雜交,結果有少量矮莖子代,則此高莖豌豆最可能的基因型應為何?
TT
Tt
tt
t
Answer explanation
解答 B
解析 因為後代有矮莖存在,故高莖豌豆(親代)一定帶有一個隱性等位基因。Tt × tt→子代Tt:tt = 1:1,若子代數量少,比例可能偏離1:1
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
附圖為某細胞正在進行細胞分裂的示意圖。圖中形態相似但顏色黑白不同的染色體互為同源染色體。據圖判斷下列敘述何者正確?
此細胞正在進行減數分裂
此細胞可能為植物細胞
此細胞可能為大腸桿菌
此細胞分裂後的子細胞,其細胞核中將含有2對同源染色體
Answer explanation
解答 D
解析 (A)此細胞分裂後,兩個子細胞中都仍有同源染色體,所以此細胞正在進行有絲分裂 (B)因為有中心粒及分裂溝,所以此細胞可能為動物細胞 (C)大腸桿菌沒有中心粒及紡錘絲等構造
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
已知一段DNA分子中,共有1000個含氮鹼基,A的數目為150個,則下列數字何者錯誤?
A + T = 300
A + C = 500
C = G = 150
嘌呤=嘧啶= 500
Answer explanation
解答 C
解析 因為DNA中,A的數目和T的數目相等;C的數目和G的數目相等;且嘌呤(即A與G)的數目 = 嘧啶(即T與C)的數目。故A = 150,T = 150,C = 350,G = 350
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