生命与科学英语作文
六年级上册英语单词>auntie"The 21st century is the century of life science." Indeed, this ems to be an era of great explosion of life science rearch. Life science is a very advanced subject, including many fields: the study of life phenomena, the nature, characteristics and occurrence of life activities, the law of development, and the relationship between various organisms and between organisms and the environment. It is actually ud to effectively control life activities, actively transform the biological world, and benefit mankind. Life science is cloly related to human survival, people's health, economic construction and social development.
subject toIf we expand the definition of life science to all life-related sciences, from microorganisms to ecological environment, from paleontology to human beings, we can e a larger picture related to life that science shows to mankind.
出口标准Here, we have lected the most reprentative rearch in some fields, divided into four chapters: Creation, Hope, Time, and Destruction. From "creating" life to curing dias, fro
m the discovery of paleontology to extinction of species, I hope to be with you. Get a peek at the tip of the iceberg of 2019 life science discoveries.
With regard to creation, human beings have also become that "creator". This year, rearchers in the UK created Escherichia coli from a completely synthetic genome. The genome synthesized by the institute is the largest of its kind to date, and the redesigned DNA contains 4 million gments, four times the previous record. Most impressively, this synthetic bacterium contains only 61 codons, compared with 64 codons in almost all organisms in nature. Despite this difference, it appears to function much like normal E. coli, except that it grows at a slower rate and is longer. Not only is the redesigned genome a technical achievement, but it tells us some of the most basic laws of biology and shows us just how plastic the genetic code really is.
authority是什么意思
为什么学日语Did we evolve from archaea? Or rather, did eukaryotes (that is, all complex organisms such as animals, plants, fungi, etc.) evolve from archaea?
This problem may require the help of "Asgard". The Asgardian Superphylum is the collect
ive name for a class of archaea in the Archaea, which includes Loki, Thor, Odin and Heimdall. They are considered to be the clost eukaryotic group of archaea, and are expected to help us answer questions about the origin of life.
In 2015, the genome of Loki archaea was first found near the hydrothermal vent of Loki's Castle near Greenland. Unfortunately, the sampling did not e the true content of Loki archaea. And this year, Japane scientists finally cultivated and isolated this magical creature in the laboratory.
德语培训Are we getting clor to an answer to "where did it come from"? hope so.2019年4月17日，A new study was published in the journal Nature and also reported on the journal's news front page. Five days later, the journal news reported it again, further answering many related questions from readers in a targeted manner. The reason this rearch has attracted so much attention is becau it sounds really surprising, and it ems to be inescapable of ethical and technical discussions.
Four hours after the pig was slaughtered, the rearchers restored the microcirculation a
paintnd molecular and cellular functions of its brain. Although rearch involving restoration of brain activity is subject to ethical review, rearch still attracts a lot of attention and discussion. In this study, the rearchers deliberately prevented the brain from regaining consciousness through technical means, and did not find any evidence that the brain was conscious in the process. But scientists also say that restoring consciousness is not entirely impossible in future rearch.
Perhaps we have stood by the door of life and death and need to start rethinking the boundaries between life and death.
As for hope, 11 years ago, "Berlin patient" Timothy Ray Brown became the world's first cured AIDS patient. This year, the "London Patient" appeared, and he was the cond to make history. Both the "London Patient" and the "Berlin Patient" received bone marrow transplants. This may offer a glimmer of hope for a cure for AIDS.
This year's good news about AIDS doesn't stop there. In the past, HIV-infected patients had to take daily medication to control the infection, but a clinical trial of an injectable dru
snowboardg combination showed that the drug remained effective for at least a month after the injection. In addition, preliminary trials suggest that an implanted anti-HIV drug may be effective for more than a year as a preventive measure. The advances may be powerful tools for ending the AIDS epidemic.
With the advancement of medicine, AIDS has become a "controllable dia". There is much more to be done than to ek more effective treatments in medicine and make it a "curable dia". How to popularize AIDS-related knowledge and how to eliminate discrimination against HIV carriers and AIDS-infected persons are all worthy of our in-depth consideration.farmville
