Sovieto
Banned
- Aug 6, 2006
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I found the thing I read for school, here it is:
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Stanley Miller and Harold Urey tested Oparin's and Haldane's hypotheses in 1953. Miller re-created what was thought to be earth's earliest atmosphere by mixing methane, ammonia, water, and hydrogen in a flask. Using electrodes, he then introduced sparks into the flask to simulate lightning and sunlight on primitive earth.
The results were phenomenal. In a few days, the flask contained an "organic soup" filled with urea, acetic acid, lactic acid, and several amino acids. From this experiment, Miller proved that it was possible for organic molecules to form spontaneously in the earth's ancient atmosphere.
What We Know Today...
With our new understanding of what earth's ancient atmosphere was like, scientists have mixed gases to produce organic molecules such as ATP and adenine. Scientists now know that many macromolecules such as amino acids, nucleotides, lipids, carbohydrates, and ATP could have been generated in the early atmosphere.
Further studies have shown that there was probably less methane and ammonia in the early atmosphere than Miller and Urey had used in their hypothetical atmosphere. Scientists also thought that the chemicals were not only concentrated in, but also protected from, the solar radiation by tiny bubbles at the ocean's surface. This would be very important because sunlight would destroy the formation of macromolecules. More recent investigations suggest that the early atmosphere was more likely rich in carbon dioxide (CO2) and nitrogen (N2), and that life may have began in deep-sea hydrothermal vents.
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The sad thing is, a religious person could get away with saying "No, God created us", and that is considered an actual "argument" to this. /rolleyes
sidenote: something that grinds my gears, even in this scientific article they don't capitalize "Earth".
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Stanley Miller and Harold Urey tested Oparin's and Haldane's hypotheses in 1953. Miller re-created what was thought to be earth's earliest atmosphere by mixing methane, ammonia, water, and hydrogen in a flask. Using electrodes, he then introduced sparks into the flask to simulate lightning and sunlight on primitive earth.
The results were phenomenal. In a few days, the flask contained an "organic soup" filled with urea, acetic acid, lactic acid, and several amino acids. From this experiment, Miller proved that it was possible for organic molecules to form spontaneously in the earth's ancient atmosphere.
What We Know Today...
With our new understanding of what earth's ancient atmosphere was like, scientists have mixed gases to produce organic molecules such as ATP and adenine. Scientists now know that many macromolecules such as amino acids, nucleotides, lipids, carbohydrates, and ATP could have been generated in the early atmosphere.
Further studies have shown that there was probably less methane and ammonia in the early atmosphere than Miller and Urey had used in their hypothetical atmosphere. Scientists also thought that the chemicals were not only concentrated in, but also protected from, the solar radiation by tiny bubbles at the ocean's surface. This would be very important because sunlight would destroy the formation of macromolecules. More recent investigations suggest that the early atmosphere was more likely rich in carbon dioxide (CO2) and nitrogen (N2), and that life may have began in deep-sea hydrothermal vents.
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The sad thing is, a religious person could get away with saying "No, God created us", and that is considered an actual "argument" to this. /rolleyes
sidenote: something that grinds my gears, even in this scientific article they don't capitalize "Earth".