JavaScript is required to use Bungie.net

자유 게시판

자유롭게 대화를 나누어보세요.
작성자: Britton 3/19/2015 1:53:16 AM
52

The origin of life, now with more science!

[quote] The origin of life on Earth is a set of paradoxes. In order for life to have gotten started, there must have been a genetic molecule—something like DNA or RNA—capable of passing along blueprints for making proteins, the workhorse molecules of life. But modern cells can’t copy DNA and RNA without the help of proteins themselves. To make matters more vexing, none of these molecules can do their jobs without fatty lipids, which provide the membranes that cells need to hold their contents inside. And in yet another chicken-and-egg complication, protein-based enzymes (encoded by genetic molecules) are needed to synthesize lipids. Now, researchers say they may have solved these paradoxes. Chemists report today that a pair of simple compounds, which would have been abundant on early Earth, can give rise to a network of simple reactions that produce the three major classes of biomolecules—nucleic acids, amino acids, and lipids—needed for the earliest form of life to get its start. Although the new work does not prove that this is how life started, it may eventually help explain one of the deepest mysteries in modern science. “This is a very important paper,” says Jack Szostak, a molecular biologist and origin-of-life researcher at Massachusetts General Hospital in Boston, who was not affiliated with the current research. “It proposes for the first time a scenario by which almost all of the essential building blocks for life could be assembled in one geological setting.”[/quote] The [url=http://news.sciencemag.org/biology/2015/03/researchers-may-have-solved-origin-life-conundrum]article[/url] is very worth reading. I'm sure many of you will cry out "they don't know for sure" and blah blah blah. Yes correct. But they are getting closer and closer. But please, [b]read the [url=http://news.sciencemag.org/biology/2015/03/researchers-may-have-solved-origin-life-conundrum]article[/url][/b]. Also please note the article summarizes a paper that's published in a scientific journal, and the actual paper is linked in the article. Hooray for proper sources! One of the implications of this is that it will be just more supporting evidence for evolution. If we know for a fact that life began randomly due to proper conditions on earth then it means all life evolved from that. Edit: title change for a better hook hopefully.

게시물 작성 언어:

 

다른 사용자들을 존중해주세요. 게시물을 제출하기 전에 한 숨 돌리고 운영 정책을 검토하세요. 취소 수정 화력팀 생성하기 게시

회원님은 해당 콘텐츠를 볼 수 없습니다.
;
preload icon
preload icon
preload icon