1. It is possible to make specific complementary DNAs that can serve as molecular probes to seek out the messenger RNAs of the peptide hormones. If brain cells are making the hormones,the cells will contain these MrnaS. If the products the brain cells make resemble the hormones but are not identical to them,then the cDNAs should still bind to these mRNAs,but should not bind as tightly as they would to mRNAs for the true hormones.
科学家可以制造出特异的互补DNAs,以此作为分子探子,探觅出肽激素的信使RNAs。如果大脑正在制造着肽激素,则细胞就会含有这些信使RNAs.假若细胞所制造的产品类似于肽激素但并非与这些肽激素全然相同,那么,互补cDNAs应仍然和这些信使mDNAs粘结的程度。含有这些mRNAs的脑细胞然后就可以被分离开来,研究者可对其信使RNAs进行解码,以确定它们的蛋白质产品究竟是什么,并确定这些蛋白质产品在何种程度上类似于真正的肽激素。
难句类型:易混词
解释:与其他的难句不同的是,心上的英文不止一句。笔者之所以在本句中不设标志和翻译,是因为这三句话从结构和意思上来说并不难。然而很少有人能够真正的一次把这段话读清楚,原因在于两个容易混淆的单词cDNAs和mRNAs在文中交替出现,而且相互作用;再加上brain cell和hormones从中捣乱,更难读清楚原文的意思。原文的主要意思如下:可以用cDNAs来探测mRNAs.如果脑细胞产生了荷尔蒙,则其中必有mRNAs意味着可用cDNA探测荷尔蒙。如果脑细胞制造的不是真荷尔蒙,则可以用cDNAs与其中的mRNAs附着的情况来确定此荷尔蒙的真假。
意群训练:It is possible to make specific complementary DNAs that can serve as molecular probes to seek out the messenger RNAs of the peptide hormones. If brain cells are making the hormones,the cells will contain these MrnaS. If the products the brain cells make resemble the hormones but are not identical to them,then the cDNAs should still bind to these mRNAs,but should not bind as tightly as they would to mRNAs for the true hormones.
上一篇: GRE考试阅读辅导:长难句实例分析37
下一篇: GRE考试阅读辅导:长难句实例分析70
外研版英语六下MODULE 7《Unit 2 He spent about twenty-one hours in space》word教案2篇
外研版英语六下MODULE 6《Unit 1 I bought you this book》word教案
开心学英语六上《Unit 11 Let’s go to space》word教案(2)
广州版英语六上《UNIT 11 Who’s Calling》word教案(一)
人教版新课标小学英语六年级教案(Unit 3 What is his name)
外研版英语六下MODULE 6《Unit 2 What`s it about》word教案2篇
开心学英语六上《Unit 8 Review 2》word教案(2)
开心学英语六上《Unit 5 It’s a magic hat》word教案(1)
开心学英语六上《Unit 2 I usually look for cookies》word教案(2)
开心学英语六上《Unit 7 He’s better than us》word教案(2)
外研版英语六下MODULE 5《Uint 2 He’s riding his bike, but it’s starting to rain》word教案
外研版英语六下MODULE 3《Unit 1 The sun is shining》word学案2篇
开心学英语六下《Unit 7 I had a bad cold》word教案之一
外研版英语六下MODULE 6《Unit 1 I bought you this book》word学案
北师大版(一起)六上《Unit 5 The broken computer》word说课稿
牛津小学英语6B全册教案[第二套]
外研版英语六下MODULE 2《Unit 1 We`re going to have a picnic》word学案
小学PEP新教材六年级下册Unit1-4英语教案
开心学英语六下《Unit 7 I had a bad cold》word教案
外研版英语六下MODULE 7《Unit 1 Shenzhou V flew into space》word说课教案
外研版英语六下MODULE 10《Unit 2 What are you going to study》word教案2篇
上海版牛津英语1-5年级全部教案
外研版英语六下MODULE 10《Unit 1 We are going to spead Chinese》word学案2篇
外研版英语六下MODULE 4《Unit 2 The apples are falling down the stairs》word教案
牛津小学英语6A全册教案[第二套]
开心学英语六上《Unit 12 Review 3》word教案(2)
开心学英语六下《Unit 3 He’s going into the hotel》word教案
开心学英语六上《Unit 8 Review 2》word教案(1)
外研版英语六下MODULE 8《Unit 2 His name was Louis Braille》word教案
外研版英语六下MODULE 8《Unit 2 His name was Louis Braille》word学案