SSS 2009-10-05
时间：2019-01-08 作者：英语课 分类：Scientific American(十)月
The 2009 Nobel Prize in physiology 1 or medicine goes to Harvard’s Jack 2 Szostak, Johns Hopkins’s Carol Greider and Elizabeth Blackburn at U.C. San Francisco for their work on how chromosomes 3 are protected by telomeres and the enzyme 4 telomerase.
The Nobel laureates’ research helped explain how an organism’s DNA 5 is successfully copied when cells divide. Telomeres are genetic 6 sequences that act like little protective caps at the end of chromosomes—think of the sealed tips of your shoelaces. Telomerase is the enzyme that builds telomeres.
Blackburn and Szostak determined 7 that it was a specific DNA sequence in the telomeres that kept chromosomes from fraying 8 whenever they were copied when a cell splits in two. Blackburn and Greider discovered telomerase. The findings have implications for the understanding of aging and cancer. Because if the enzyme keeps the telomeres robust 9, the chromosomes stay protected and the cell’s aging is slowed. And in cancer cells, which unfortunately do not seem to age, telomere length is maintained virtually indefinitely. Szostak, Greider and Blackburn thus revealed one of life’s basic mechanisms 10, and paved the way for new medical strategies.
- He bought a book about physiology.他买了一本生理学方面的书。
- He was awarded the Nobel Prize for achievements in physiology.他因生理学方面的建树而被授予诺贝尔奖。
- I am looking for the headphone jack.我正在找寻头戴式耳机插孔。
- He lifted the car with a jack to change the flat tyre.他用千斤顶把车顶起来换下瘪轮胎。
- Chromosomes also determine the sex of animals. 染色体也决定动物的性别。 来自《简明英汉词典》
- Each of four chromosomes divide longitudinally. 四种染色体的每一种都沿着纵向分裂。 来自《现代汉英综合大词典》
- Above a certain temperature,the enzyme molecule will become unfolded.超过一定温度，酶分子将会展开。
- An enzyme that dissolves the fibrin of blood clots.能溶解血凝块中的纤维的酶。
- DNA is stored in the nucleus of a cell.脱氧核糖核酸储存于细胞的细胞核里。
- Gene mutations are alterations in the DNA code.基因突变是指DNA密码的改变。
- It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
- Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。
- I have determined on going to Tibet after graduation.我已决定毕业后去西藏。
- He determined to view the rooms behind the office.他决定查看一下办公室后面的房间。
- The cuffs of his shirt were fraying. 他衬衣的袖口磨破了。
- Support for the leader was fraying at the edges. 对这位领导人的支持已经开始瓦解。 来自《简明英汉词典》
- She is too tall and robust.她个子太高，身体太壮。
- China wants to keep growth robust to reduce poverty and avoid job losses,AP commented.美联社评论道，中国希望保持经济强势增长，以减少贫困和失业状况。
- The research will provide direct insight into molecular mechanisms. 这项研究将使人能够直接地了解分子的机理。 来自《简明英汉词典》
- He explained how the two mechanisms worked. 他解释这两台机械装置是如何工作的。 来自《简明英汉词典》