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【单选题】
A fatty acid which is not synthesized in the body and has to be supplied in the diet isA.
Palmitic acid
B.
Lauric acid
C.
Linolenic acid
D.
Palmitoleic acid
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【简答题】We have received your letter of May 10th, (infrom) ______ us of the rise of the price.
【简答题】有一个单顺反子细菌的mRNA，它含有936个碱基，在其编码顺序中有一个起始密码和一个终止密码。 ①这个mRNA的初级翻译产物会有多少个氨基酸？假设蛋白质中氨基酸的平均分子量为120，那么这个翻译产物的分子量是多少？ ②计算合成一个分子这种蛋白质产物所需ATP的分子数。 ③若全部形成α-螺旋结构，则长度为多少？
【单选题】The rise of British novel was in the______.
A.
16th century
B.
17th century
C.
18th century
D.
19th century
【单选题】下列对原核细胞mRNA的论述正确的是:
A.
多数为单顺反子mRNA
B.
为多顺反子mRNA,在转录后加工切割成单顺反子mRNA
C.
为多顺反子mRNA,翻译成一个大的蛋白质前体,经翻译后加工成若干个成熟的蛋白质
D.
为多顺反子mRNA,每个顺反子都有自己的起始和终止密码子,分别翻译成各自的产物
E.
为单顺反子mRNA,但由内含子和外显子相间排列
【简答题】根据《标准施工招标文件》中通用合同条款的规定，变更指示只能由（ ）发出。
【单选题】________ that saw the rise of quite a number of new writers.
A.
During the first half of the 18th century
B.
That it was in the first half of the 18th century
C.
It was in the first half of the 18th century
D.
It was the first half of the 18th century
【单选题】The rise of English novels was in the 18th century with______.
A.
Henry Fielding's Tom Jones
B.
Jonathan Swift's Gulliver's Travels
C.
Daniel Defoe's Robinson Crusoe
D.
Samuel Richardson's Pamela
【单选题】Which of the following is the immediate cause for the rise of oil prices?
A.
A decline in the excess capacity of OPEC as a group.
B.
The failure to boost Iraq oil production quickly.
C.
United States foreign policy.
D.
The bombing of pipelines in Iraq.
【简答题】有一个单顺反子细菌的mRNA，它含有936个碱基，在其编码顺序中有一个起始密码和一个终止密码。 ①这个mRNA的初级翻译产物会有多少个氨基酸？假设蛋白质中氨基酸的平均分子量为120，那么这个翻译产物的分子量是多少？ ②计算合成一个分子这种蛋白质产物所需ATP的分子数。 ③若全部形成α-螺旋结构，则长度为多少？
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