标签：enzyme 相关文章

VOA慢速英语20061212b

VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Steve Ember. VOICE TWO: And I'm Barbara Klein. This week -- the story of aspirin. (MUSIC) VOICE ONE: Our story begins with the willo

发表于:2018-12-01 / 阅读(123) / 评论(0) 分类 2006年慢速英语(十二)月

经济学人:分子生物学 蛋白质的奥秘(1)

Science and technology 科技 Molecular Biology: Folding Stuff 分子生物学：折叠 Shape determines a protein's function. Determining that shape, though, is tricky. 蛋白质的结构决定功能，而结构的形成却很难。 ABOUT 120,000 ty

发表于:2018-12-05 / 阅读(54) / 评论(0) 分类 经济学人科技系列

VOA慢速英语20060621a

HEALTH REPORT - Pregnant Women Warned About a Kind of Blood Pressure MedicineBy Brianna Blake Broadcast: Tue, 20 Jun 2006 16:00:00 UTC I'm Shep O'Neal with the VOA Special English Health Report. takin

发表于:2018-12-07 / 阅读(44) / 评论(0) 分类 2006年慢速英语（六）月

SSS 2008-08-20

This is Scientific Americans Sixty Seconds Science. Im Steve Mirsky. Got a minute? Youve no doubt heard that grapefruit juice can greatly increase the effects of some drugs. Even to a dangerous degree. Pharmacologist David Bailey made that discovery

发表于:2018-12-24 / 阅读(80) / 评论(0) 分类 Scientific American(八)月

SSS 2011-02-23

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The ability to digest milk as adults, and as infants, actually, is due to the expression of an enzyme called lactase. That's the University of Pennsylvania's Sarah Tishk

发表于:2018-12-24 / 阅读(67) / 评论(0) 分类 Scientific American(二)月

SSS 2011-09-22

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Scientists can now include online gaming in their problem-solving arsenal. Because game players seem to have provided an answer to a scientific questio

发表于:2018-12-24 / 阅读(75) / 评论(0) 分类 Scientific American(九)月

SSS 2009-12-14

Sickle cell disease is a blood disorder due to a single genetic mutation. It remains in populations because the mutation has a flip sideit helps to protect against malaria. Now another mutation has been shown to afford similar protection. Deficiency

发表于:2018-12-24 / 阅读(66) / 评论(0) 分类 Scientific American(十二)月

整天坐着会带来哪些可怕的后果

1. You Can Say Goodbye to Good Cholesterol After Just 2 Hours of Sitting 1. 只要坐了俩小时，你就可以对好胆固醇说再见了 Just like a light switch, electrical activity flips off the moment your butt hits the chair. Calorie burning i

发表于:2019-01-03 / 阅读(94) / 评论(0) 分类 实用英语

SSS 2009-10-05

The 2009 Nobel Prize in physiology or medicine goes to Harvards Jack Szostak, Johns Hopkinss Carol Greider and Elizabeth Blackburn at U.C. San Francisco for their work on how chromosomes are protected by telomeres and the enzyme telomerase. The Nobel

发表于:2019-01-08 / 阅读(92) / 评论(0) 分类 Scientific American(十)月

SSS 2010-04-08

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This'll just take a minute. If you want to shell a walnut, it helps to have a nutcracker. And if you want to digest seaweed, it helps to have the right enzymes. Now, a study in the jo

发表于:2019-01-08 / 阅读(89) / 评论(0) 分类 Scientific American(四)月

SSS 2012-06-14

Plants that use animals to disperse their seeds can find themselves in a pickle: They need to make fruit tasty enough to entice the local fauna, but they also need to make sure that their animal asssistants don't digest the very seeds that are meant

发表于:2019-01-08 / 阅读(92) / 评论(0) 分类 Scientific American(六)月

VOA慢速英语 2008 0408b

VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Barbara Klein. VOICE TWO: And I'm Bob Doughty. This week, we will tell about icy material shooting up from a moon of the planet Saturn. We will also tell about an experimental drug fo

发表于:2019-01-11 / 阅读(56) / 评论(0) 分类 VOA慢速英语2008年（四）月

Food Makers See Crunch Time Against New Maize for Fuel

This is the VOA Special English Agriculture Report. (SOUND) Food companies say a new kind of maize could take the crunch out of corn chips and other popular foods. The big Swiss company Syngenta genetically engineered the maize to contain an enzyme c

发表于:2019-01-12 / 阅读(101) / 评论(0) 分类 2011年VOA慢速英语(三)月

经济学人132:延长寿命 谢啦,老妈!

Science and Technology Extending lifespan Thanks, Mum! 科技 延长寿命 谢啦，老妈！ An obscure group of animals may reveal the secret of elongating life 一群不为人知的动物可能会揭开长寿之谜 THE one sure way to prolong an a

发表于:2019-01-26 / 阅读(31) / 评论(0) 分类 经济学人科技系列

Cheese from Camels

> 79 如何提取骆驼奶制作乳酪 DATE=8-7-01 TITLE=AGRICULTURE REPORT - Cheese from Camels BYLINE=George Grow （Start at 59

发表于:2019-01-30 / 阅读(116) / 评论(0) 分类 科技之光

HEALTH REPORT - Drug for Other Diseases May Have Use Against

HEALTH REPORT - Drug for Other Diseases May Have Use Against AIDS By Cynthia Kirk Broadcast: Wednesday, August 31, 2005 I'm Barbara Klein with the VOA Special English Health Report. Scientists say the

发表于:2019-01-30 / 阅读(68) / 评论(0) 分类 健康与经济

U.S. researchers find potential target for treating diabetes, obesity

WASHINGTON, Aug. 2 (Xinhua) -- U.S. researchers at Washington University School of Medicine in St. Louis have identified a potential target for treating diabetes and obesity, according to a study published online on Thursday in the journal Cell Metab

发表于:2019-02-09 / 阅读(67) / 评论(0) 分类 英语新闻

Step by Step 3000 第2册 Unit8:Everybody can help the environment(3)

Part 3. PBSa biodegradable plastic product. Keywords. plastic, new solution, biodegradable plastic, break down, PBS. Vocabulary. PBS, biodegradable, tableware, microorganism, enzyme, degrade, dump. Environmental protection is a big issue nowadays. Wh

发表于:2019-02-15 / 阅读(97) / 评论(0) 分类 Step by Step 3000 第二册

囧发明 科学家发明会发光的可爱多

It may be a la mode to create lighter versions of our favourite snacks but one company has taken the trend rather literally. 创意美食，点亮生活。不过，一家公司当真做到了把那些最受人们欢迎的副食点亮了。 The world'

发表于:2019-02-18 / 阅读(44) / 评论(0) 分类 英语新闻

生活中会碰到的GRE词汇总结

近日刚开始背GRE单词，闲来无事，随便总结总结，看到这些单词感觉很放松，没觉得它们是GRE单词，特与大家分享，希望大家喜欢！！ 夏利（汽车）Charade （charade n.看手势猜字谜游戏）--bump

发表于:2019-02-25 / 阅读(103) / 评论(0) 分类 GRE英语
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