南极真菌可在类火星环境中存活18个月-凯发k8官网

南极真菌可在类火星环境中存活18个月
文章来源:未知 文章作者:enread 发布时间:2016-01-31 05:01 字体: [ ] 
(单词翻译:双击或拖选)
european scientists have gathered tiny 1 that take shelter in antarctic rocks and sent them to the international space station. after 18 months on board in conditions similar to those on mars, more than 60% of their cells remained intact, with stable 2. the results provide new information for the search for life on the red planet. 3 from the sierra de gredos (spain) and the alps (austria) also travelled into space for the same experiment. the mcmurdo dry valleys, located in the antarctic victoria land, are considered to be the most similar earthly equivalent to mars. they make up one of the driest and most hostile environments on our planet, where strong winds 4 away even snow and ice. only so-called cryptoendolithic microorganisms, capable of surviving in cracks in rocks, and certain lichens can withstand such harsh climatological conditions.
 
a few years ago a team of european researchers travelled to these remote valleys to collect samples of two species of cryptoendolithic fungi: cryomyces antarcticus and cryomyces minteri. the aim was to send them to the international space station (iss) for them to be subjected to martian conditions and space to observe their responses.
 
the tiny fungi were placed in cells (1.4 centimetres in diameter) on a platform for experiments known as expose-e, developed by the european space agency to withstand extreme environments. the platform was sent in the space shuttle atlantis to the iss and placed outside the columbus 5 with the help of an astronaut from the team led by belgian frank de winne.


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1 6hrx6     
n.真菌,霉菌
参考例句:
  • students practice to apply the study of genetics to multicellular plants and fungi.学生们练习把基因学应用到多细胞植物和真菌中。
  • the lawn was covered with fungi.草地上到处都是蘑菇。
2 4u3z1l     
(缩)deoxyribonucleic acid 脱氧核糖核酸
参考例句:
  • 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。
3 8ba13422ddec8ecf73fb1d0cb20f495f     
n.地衣( lichen的名词复数 )
参考例句:
  • the only plants to be found in antarctica are algae, mosses, and lichens. 在南极洲所发现的植物只有藻类、苔藓和地衣。 来自辞典例句
  • litmus: mixture of coloured organic compounds obtained from several species of lichens. 石蕊:从几种地衣类植物中获取的带色有机化合物的混合物。 来自互联网
4 odvzj     
v.搜索;擦,洗,腹泻,冲刷
参考例句:
  • mother made me scour the family silver.母亲让我擦洗家里的银器。
  • we scoured the telephone directory for clues.我们仔细查阅电话簿以寻找线索。
5 iejxj     
n.组件,模块,模件;(航天器的)舱
参考例句:
  • the centre module displays traffic guidance information.中央模块显示交通引导信息。
  • two large tanks in the service module held liquid oxygen.服务舱的两个大气瓶中装有液态氧。
tag标签: cells mars
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