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无ran酶纯水

发布时间:2021-12-21 21:00:19

① 下列关于二倍体高等植物细胞有丝分裂的叙述,不正确的是

【答案】B
【答案解析】试题分析:植物细胞有丝分裂需要线粒体提供能量,核糖体合成蛋白质,高尔基体形成细胞壁,A正确;要进行DNA复制,转录和翻译,因此需要DNA解旋酶、RAN聚合酶、等酶的参与,无DNA水解,无需DNA酶,B错;在细胞分裂的间期有同源染色体的复制,C正确;分裂后期染色体数暂时增倍,DNA在间期已经复制,末期随着细胞一分为二,染色体和DNA数都减半,D正确。
考点:本题考查细胞有丝分裂相关知识,意在考查考生能理解所学知识的要点,把握知识间的内在联系能力。

② 求翻译一篇英语

The Coca-Cola Company (Coca-Cola, The specific NYSE: KO) is a Company headquarters is located in The United States in Atlanta, Georgia multinational drinks manufacturers. Independent proction of the procts have coke, Sprite, fanta, marked, Glaceau vitaminwater, beauty of fruit series, QOO queer juice series, fly snow mineral water, pure water ice dew series series, the earth and heaven, and the valley of haze of tea series, etc. And nestle cooperative proction of refreshing tea, a nestle canned nestle coffee etc.

Although many different about "Coca-Cola" the legend of the name, in fact, "Coca-Cola" English name is by pemberton was assistant accountant named Robinson and partner. He is a classical calligrapher, he thinks "two capital C word will look nice", so the Coca-Cola "with", "Coca" Coca leaves promotes practice is the spices, "Cola" is coke out of the fruit components. "Coca-Cola" trademark DuoNian to have been no change.

"Coca-Cola" the origin of the Chinese name

"Coca-Cola" this name, already "delicious" also "coke", not only keep English sound, still more interesting than English. The Chinese name is by scholars JiangYi translation to come out. "Coca-Cola" in "1920 s proction but not in Shanghai has officially Chinese name. At first use" Ke Ke chew wax ", result because of improper literally in the Chinese market and failed to success. [1] so, when "Coca-Cola" dedicated to the overseas business "Coca-Cola" export company in Britain, was for translation. Was study in Britain, and the JiangYi with "Coca-Cola" four word beat the other competitors took 350 pounds. [1].

Advertising slogan

2000 heart jump in! We work hard to live out the brilliant!

2000 Koka-kola. Or

Tastes good act 2001

2003 in this burning passion

2010 and who you want to share the New Year the first a bottle of Coca-Cola

2011 positive and optimistic a better life

Coke history

Coca-Cola was a doctor of invention, also can saying is he manufactured the coke. Once, he gave a patient a doctor, opened a bottle of potions, let patients after coming home taking, results, when he ready to rest, suddenly night the man again come, and are glad to, will own the VAT handed to the doctor, filled with full requirements before a barrel, and a potion last time, just as the doctor muddleheaded ground did. The next day, he took a stronger player to come here, they pass their cups and bucket, rob to buy potions. The doctor was very strange, then ask why they every day to buy medicine, is it every family ill? People holding thumb praised the potion is very nice. Here The doctor confused: "no ill, why buy medicine every day? Is this the potions can cure, or delicious drink?" And so, he bold opened a "potions" factory, because this potion is very nice, people drink are extremely happy, he decided to call it "Coca-Cola", the unknown doctor, just because a bottle of potions, and then let his potions around the world. 1885, Georgia, USA "Dr. John Stith Pemberton. >. And invented the brunet syrup called pan burton French Wine coke (Pemberton 's Flench Wine Koka) in the same year the government issued a commissioner, so pan burton invention non-alcoholic Pemberton' s Flench Koka Wine. On May 8, 1886, pan burton doctor wanted to invent a drink, a kind of let many need compensatory nutrition people like to drink beverages. That day, he is prepared to stir the s Coca-Cola beverages, found it has a calming influence, refreshing, and ease headache, he will join the syrup and the liquid water, and then add ice, he tasted it, it's very delicious, but in the second cup, the assistant carelessly joined the carbonated water (soda water) (carbon dioxide + water) tastes better this time, partners (Flank M.L obinson) Robinson from two ingredients of syrup, stimulate the naming of inspiration, these two elements are Coca (Coca leaves and korah) (Kola) fruit, Robinson to neat and tidy, will the Kola change, and then in C K two words with a horizontal, and among Coca-Cola was born, and the first Coca-Cola sells for five cents.

③ 请教一下这是什么动漫最近没太关注...

无头骑士异闻录
这里的是临也~~

④ 酶的本质是蛋白质和RAN,蛋白质的性质我们已经学过,有哪些性质呢

对于酶来说性质是:催化性、专一性、条件温和性、高效性。一般很少去说蛋白质的性质。蛋白质的结构决定其功能,每种蛋白质功能不一样,性质也不一样。比如载体蛋白具有专一性。蛋白质容易高温变性失去其功能

⑤ 当RAN聚合酶到达终止密码子时,RNA合成结束 这句话哪里错了

RNA合成的开始与结束对应起始子与终止子,因此RNA聚合酶到达终止子的部位时,RNA合成才结束。
多肽合成(翻译)的结束才对应终止密码子(且多肽的合成不需要额外的酶)

⑥ 原核生物RAN聚合酶的作用与结构

作用:转录,合成RNA
结构:核心酶a2bb’w
阿尔法亚基:识别和结合起动子
贝塔亚基:催化部位的主体,转录的起始和延伸
西格马因子:转录起始,识别起动子
抑制剂:利福平,肝素

纯水摩托车是什么意思

纯水就是指走私的摩托车,这种车基本上都是二手旧车,车的来源不专明,比如有报废车、盗属抢车等,通过走私渠道进入国内,这种车上不能上牌,也不能合法上路,管的严的地方上路会被交警查扣。

  1. 纯水:从国外转至国内港口的二手车,这些车大都是在两年左右,成色都很好,价格高。

2.一般水货:和上述的纯水类似,但一般都是车龄较老的,10年以内的,但是成色和保养还是不错的,价格也比较高。

(7)无ran酶纯水扩展阅读:

摩托车,由汽油机驱动,靠手把操纵前轮转向的两轮或三轮车,轻便灵活,行驶迅速,广泛用于巡逻、客货运输等,也用作体育运动器械。从大的方向上来说,摩托车分为街车,公路赛摩托车,越野摩托车,巡航车,旅行车等。

⑧ C1酯酶是什么

C1抑制物(C1INH)是血清中高度糖基化的一种蛋白质,含糖量高达35-49%。最初由Ranoff和lepow(1957)所发现,称其为C1酯酶抑制剂,与引同时Schultze等则将其称为α2神经氨酸糖蛋白。C1INH为一单链分子,由478个氨基酸残基组成,分子量为104kDa,由478个氨基酸残基组成,分子量为140kDa,链内有两对二硫键(图5-13)。C1INH调节的主要方式是,与活化的C1r或C1s结合形成稳定的复合物而导致C1丝氨酸蛋白酶失活。其作用机理是,C1INH通过提供一个酷似C1r或C1s的正常底物的序列为“锈铒”(“t”),被c
1r或C1s裂解暴露出一个活性部位,然后再与C1r或C1s结合形成共价的酯键而发挥抑制作用。此外,C1INH还可防止在缺乏抗体时,C1以很低但仍有一定速率出现的自发激活。正常情况下,血液中的大多数C1可被7倍于其克分子浓度的C1INH所结合,以防止C1由于构象改变而引起的自发激活。但C1同抗原、抗体复合物的结合,可使C1从C1INH的抑制作用中而获释。除上述作用外,C1INH还可抑制凝血因子Ⅻa、Ⅺa、激肽释放酶及纤溶酶,因而其在凝血、激肽和纤溶系统中也有重要的调节作用。

⑨ DNA是否是一种酶

DNA不是酶,DNA可以控制酶的合成,是一种遗传物质。绝大多数的RNA不是酶,但有少数的RNA是酶

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