選修生物I-4-1~4-3(2)
Quiz
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Biology
•
10th Grade
•
Medium
葉東茂 葉東茂
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45 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
細菌在含15N的培養基中繁殖很多代後,轉移至含14N的培養基中培養,經過2次分裂後,DNA兩股仍為15N的後代百分比為何?
0%
25%
50%
75%
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
有關DNA複製流程,下列敘述何者有誤?
解旋酶將兩股DNA分開,形成複製叉
藉由DNA聚合酶,從模版股的3' 端往5' 端方向依照鹼基配對原則,合成方向相同的新核苷酸鏈
在複製的過程中,只有一股新合成的核苷酸鏈,其複製方向與DNA延長方向相同,稱此股為領先股
岡崎片段最後經由DNA連接酶接起來,形成完整的核苷酸鏈
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
某段染色體DNA其某一股的序列為:3' CCTAGGCAGCAATCC 5',當此段DNA進行複製時,由此股序列中有下標的A處開始合成引子,則下列何者可能為引子的序列?
5' TCGTTAGG 3'
5' TGCCTAGG 3'
5' UCGUUAGG 3'
5' UGCCUAGG 3'
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
附圖為DNA轉錄示意圖,下列有關此圖的敘述,何者有誤?
RNA聚合酶由DNA模版股的5' 端往3' 端方向作用,將互補的核糖核苷酸與DNA模版上的鹼基配對
同一條DNA上的基因可同時在不同點進行轉錄
不同的基因可以同時進行轉錄
真核生物先形成先驅RNA,再修飾成mRNA
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
有關真核生物RNA的相關敘述,下列何者錯誤?
mRNA、tRNA、rRNA是先驅RNA剪接合成的
核仁的成分為tRNA和蛋白質
tRNA具有反密碼子,可辨認、攜帶特定胺基酸
組成RNA的核苷酸,含有AUCG等四種含氮鹼基
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
細胞製造蛋白質過程中,先後出現a遺傳密碼b密碼子c反密碼子d外顯子,各密碼出現的先後次序為何?
abcd
adcb
adbc
bacd
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
在DNA半保留複製的同位素追蹤實驗,將DNA為14N的親代細菌置於15N的培養基中,經3次分裂,則培養基中的細菌,一股含14N,而另一股含15N以及二股DNA皆含15N,則第三次分裂後子代14N15N與15N15N的個體數比應為
1:7
1:1
1:3
3:1
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