Traveling in time, looking for home | Metropolis Newspaper
Last sprayed cross Osumi river waters. Attending the ceremony Ilir Meta Nasip Naco Tirana budget Lighten intranet quorum up serious accident in 2016, the hospital director Bulqize Basha: Rama promises in the budget include laughter CULTURE AS A CHALLENGE-in honor of Gjosho Vasisë -
How life has begun? It is without doubt one of the most important questions of biology. But one of the most difficult to answer, and besides being the most controversial. Scientists discuss every step that led to the first living organisms and of them that he will reveal the molecules and mechanisms that make life work would almost guarantee Nobel Prize. intranet quorum
The problem in studying the origin of life is complicated by another difficult question: what is life? The definitions are more than a dozen. NASA ezobiologjisë program has adapted, for example, the definition of life as "chemical system that feed on itself and undergoes Darwinian evolution." So, one way to identify the common characteristics of life and to remember that living things are not "things", but a guided process of chemical reactions: metabolism.
Yet, even though we have not all the answers to the origin of life, recent studies offer exciting new indicators. Last year scientists have discovered fossils in an absolutely ancient sedimentary rock 3.4 billion years old, in STRELEY Pool on the west coast of Australia. intranet quorum Rock contains microscopic structures like cells, surrounded by "digital footprint" chemical, an indicator of biological activity. It is about carbon isotopes present in proportions that show the conversion of CO2 - carbonic anhydrous - inorganic, organic molecules that are produced by living cells.
"We identified conserved unit so fantastic and included in the small window between kokërzave sand, which seems to have avoided printing. Structures are similar to the cells, their morphology and chemistry of biological type compatible with their biological metabolic pathways, "explains intranet quorum Martin Brasier, paleobiolog at Oxford University.
Rock chemistry shows that, among others, these primitive microbes generate electricity through chemical reactions that use sulfur, similar to this with current sulfobakteret. Clearly that these ancient microbes were a plenty of sophisticated form of life and hardly represent the first living organisms.
Then, when life has been starting? Hardly the first organisms to be displayed earlier than 4 billion years ago, then 500 million years after the formation of Earth. At that time, our planet was a world of water and dry land had taken the form of isolated arcs, rather than actually continents. Brightness of the Sun was only 70 percent intranet quorum of the actual and volcanic activity increase temperatures up to soft conditions, intranet quorum between 25 and 60 degrees Celsius.
Compared with today, the Moon was closer, tides cause stronger and faster Earth rotated around intranet quorum him. The days were shorter and their duration was between eight and ten hours. Surface intranet quorum rock hit repeatedly by remnants of primitive Solar System during the Late Great shelling when the meteors were not unusual ten times larger than those that caused the extermination of the dinosaurs.
Once completed 3.8 billion years ago, this eon Adea (eoni category scale is higher among recent subdivisions geological scale) - whose name is inspired by the world of the ancient Greeks - the idea of a hell on Earth. However, the microbes was a kind of paradise.
In fact, the meteors will be important vectors of metal to be in their face, in their turn, volcanic and solar energy provide the necessary energjnë. intranet quorum Primitive Earth, although at first glance seems to have been hostile to human like us, was in fact a very lively place where life could develop.
Rolled by gases, the atmosphere was without oxygen, a rare product that is produced by plants and algae, which then did not exist. In fact primitive atmosphere contained methane, carbon anhydride, intranet quorum sulfur dioxide, and water vapor sulfhidrik acid in quantities. "These toxic substances seem to us, yet are most ideal raw materials for microbial life. For them, it was a paradise world, intranet quorum "says Braiser.
Perhaps intranet quorum there will never discover traces of primitive life to documenting fossil intranet quorum canned and sticky at times beyond mikrofosileve Australian. As Braiser explains, "before three and a half billion years the evidence is exclusively mineral or chemical, possibly because these older rocks are too deteriorated to conserve the remains of cells. Every form of life is the cell. P
Last sprayed cross Osumi river waters. Attending the ceremony Ilir Meta Nasip Naco Tirana budget Lighten intranet quorum up serious accident in 2016, the hospital director Bulqize Basha: Rama promises in the budget include laughter CULTURE AS A CHALLENGE-in honor of Gjosho Vasisë -
How life has begun? It is without doubt one of the most important questions of biology. But one of the most difficult to answer, and besides being the most controversial. Scientists discuss every step that led to the first living organisms and of them that he will reveal the molecules and mechanisms that make life work would almost guarantee Nobel Prize. intranet quorum
The problem in studying the origin of life is complicated by another difficult question: what is life? The definitions are more than a dozen. NASA ezobiologjisë program has adapted, for example, the definition of life as "chemical system that feed on itself and undergoes Darwinian evolution." So, one way to identify the common characteristics of life and to remember that living things are not "things", but a guided process of chemical reactions: metabolism.
Yet, even though we have not all the answers to the origin of life, recent studies offer exciting new indicators. Last year scientists have discovered fossils in an absolutely ancient sedimentary rock 3.4 billion years old, in STRELEY Pool on the west coast of Australia. intranet quorum Rock contains microscopic structures like cells, surrounded by "digital footprint" chemical, an indicator of biological activity. It is about carbon isotopes present in proportions that show the conversion of CO2 - carbonic anhydrous - inorganic, organic molecules that are produced by living cells.
"We identified conserved unit so fantastic and included in the small window between kokërzave sand, which seems to have avoided printing. Structures are similar to the cells, their morphology and chemistry of biological type compatible with their biological metabolic pathways, "explains intranet quorum Martin Brasier, paleobiolog at Oxford University.
Rock chemistry shows that, among others, these primitive microbes generate electricity through chemical reactions that use sulfur, similar to this with current sulfobakteret. Clearly that these ancient microbes were a plenty of sophisticated form of life and hardly represent the first living organisms.
Then, when life has been starting? Hardly the first organisms to be displayed earlier than 4 billion years ago, then 500 million years after the formation of Earth. At that time, our planet was a world of water and dry land had taken the form of isolated arcs, rather than actually continents. Brightness of the Sun was only 70 percent intranet quorum of the actual and volcanic activity increase temperatures up to soft conditions, intranet quorum between 25 and 60 degrees Celsius.
Compared with today, the Moon was closer, tides cause stronger and faster Earth rotated around intranet quorum him. The days were shorter and their duration was between eight and ten hours. Surface intranet quorum rock hit repeatedly by remnants of primitive Solar System during the Late Great shelling when the meteors were not unusual ten times larger than those that caused the extermination of the dinosaurs.
Once completed 3.8 billion years ago, this eon Adea (eoni category scale is higher among recent subdivisions geological scale) - whose name is inspired by the world of the ancient Greeks - the idea of a hell on Earth. However, the microbes was a kind of paradise.
In fact, the meteors will be important vectors of metal to be in their face, in their turn, volcanic and solar energy provide the necessary energjnë. intranet quorum Primitive Earth, although at first glance seems to have been hostile to human like us, was in fact a very lively place where life could develop.
Rolled by gases, the atmosphere was without oxygen, a rare product that is produced by plants and algae, which then did not exist. In fact primitive atmosphere contained methane, carbon anhydride, intranet quorum sulfur dioxide, and water vapor sulfhidrik acid in quantities. "These toxic substances seem to us, yet are most ideal raw materials for microbial life. For them, it was a paradise world, intranet quorum "says Braiser.
Perhaps intranet quorum there will never discover traces of primitive life to documenting fossil intranet quorum canned and sticky at times beyond mikrofosileve Australian. As Braiser explains, "before three and a half billion years the evidence is exclusively mineral or chemical, possibly because these older rocks are too deteriorated to conserve the remains of cells. Every form of life is the cell. P
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