How did life on Earth? table of specific heats The science still does not know. But researcher Sankar Chatterjee, affiliated with Texas Tech University thinks now be off. "This is where we all have been looking for the Holy Grail of science."
"When the Earth formed about 4.5 billion years ago, it was a sterile planet where nothing could live," says Chatterjee. "It was a seething cauldron consisting of volcanoes erupted, meteorites rained on earth and hot, noxious gases." But a billion years later saw our planet is very different. "A billion years later, it was a quiet, watery planet full of microbial life: the ancestors of all life on Earth."
How did life? Very interesting. table of specific heats But the most interesting is of course table of specific heats the period Chatterjee leaves in its very general summary of the distant history of our planet. The period between table of specific heats the time when the earth barren and when the earth alive was. In other words, the time when life began. table of specific heats Where did the ingredients for life come from? And what came next? Lives that And where? Chatterjee thinks to know. For his theory, he combined theories table of specific heats of chemical evolution and evidence table of specific heats of geology on the early Earth.
Four stages, according to the researchers, the emergence of life on Earth can be divided into four phases. table of specific heats Among the best In the first phase, the earth is still taking shape, asteroids and comets regularly countries on earth. They not only bring along ingredients for life, but also constitute enormous craters that serve as huge 'crucible' that brings together the ingredients of life. Occasional meteorites drilling table of specific heats through the earth's crust over, causing hydrothermal vents occur. Comets that crashed on earth, melting and provide our earth - thanks to his perfect distance from the sun - water. That water ends up in the craters where the geothermal energy from the hydrothermal vents it heats up and keeps moving. In the craters formed as a primordial soup filled with ingredients of life. It's a matter of time before that life arises, says Chatterjee.
Primordial soup that is phase two. The craters dark, hot and isolated breeding table of specific heats ponds for life. "It was a bizarre table of specific heats and isolated world that looks a bit like the image we have of hell: the smell of hydrogen sulfide, methane, nitrous oxide and steam." Go in that environment substances interfering substances and grow slowly but surely to increasingly complex substances: that is the third phase. Next phase in which four must begin replicating cells genetic table of specific heats information to store, process and transmit. "These self-contained first cells were capable of evolution. The creation of this first cell on the young Earth was the result table of specific heats of a long history of chemical, geological and cosmic processes. "
Chatterjee presented his theory last week, during a meeting of the Geological Society of America. "This is more important than the finding of a dinosaur. table of specific heats This is what we were looking table of specific heats for all:. Holy grail of science "Whether Chatterjee's table of specific heats theory is correct, remains to be seen. Including by experiments in which the prebiotic world is simulated experiments.
And here are all the hypothesis http://en.wikipedia.org/wiki/Abiogenesis
The 'special' to his research (and that does not really come forward in the article) is that he focuses on the craters from meteorites / ingredients come bombing as the most plausible place of origin. as well as RNA and proteins that appeared simultaneously in his new theory, in which 'flowing hydrthermale crater worlds would be the formation of RNA rapidly decompose unless supported by early proteins. which may be of amino acids that have to occur there. richly in turn be easily formed under those circumstances, Current theories assume that RNA first and only then come proteins. table of specific heats
Too hot to form life? where did you get that? in many subaquatic geysers or vents teeming with life. And the reason is explained "Most likely, pores and crevices on the crater basins ACTED as scaffolds for Concentrations of simple RNA and protein molecules" to see the chemistry behind the proposed examples you obviously need some further digging, but it's there.
The released radioactivity at radiation can cause chemical table of specific heats changes in the material and thus can lead to continuous cell division. The first forms of life then reproduce by binary division such as is the case in bacteria. table of specific heats
If life of primitive cells as well as more complex organisms can ge there
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