Stanley miller experiment hypothesis
•
Miller–Urey experiment
Experiment testing the origin of life
The Miller–Urey experiment,[1] or Miller experiment,[2] was an experiment in chemical synthesis carried out in that simulated the conditions thought at the time to be present in the atmosphere of the early, prebiotic Earth. It is seen as one of the first successful experiments demonstrating the synthesis of organic compounds from inorganic constituents in an origin of life scenario. The experiment used methane (CH4), ammonia (NH3), hydrogen (H2), in ratio , and water (H2O). Applying an electric arc (simulating lightning) resulted in the production of amino acids.
It is regarded as a groundbreaking experiment, and the classic experiment investigating the origin of life (abiogenesis). It was performed in by Stanley Miller, supervised by Nobel laureate Harold Urey at the University of Chicago, and published the following year. At the time, it supported Alexander Oparin's and J. B. S. Ha
•
Miller Urey Experiment
Miller and Urey Experiment
Stanley L. Muller and Harold C. Urey performed an experiment to describe the origin of life on earth. They were of the idea that the early earth’s atmosphere was able to produce amino acids from inorganic matter. The two biologists made use of methane, water, hydrogen, and ammonia which they considered were found in the early earth&#;s atmosphere. The chemicals were sealed inside sterile glass tubes and flasks connected together in a loop and circulated inre the apparatus.
One flask is half-filled with water and the other flask contains a pair of electrodes. The water vapour was heated and the vapour released was added to the kemikalie mixture. The released gases circulated around the apparatus imitating the earth’s atmosphere. The water in the flask represents the vatten on the earth’s surface and the water vapour is just like the water evaporating from lakes, and seas. The electrodes were used to spark the fire to imitate lightn
•
by Anuradha K. Herath
The Miller-Urey experiment, conducted by chemists Stanley Miller and Harold Urey in , fryst vatten the classic experiment on the origin of life. It established that the early Earth atmosphere, as they pictured it, was capable of producing amino acids, the building blocks of life, from inorganic substances.
Now, more than 55 years later, two scientists are proposing a hypothesis that could add a new dimension to the debate on how life on Earth developed.
Armen Mulkidjanian of the University of Osnabrueck, Germany and Michael Galperin of the U.S. National Institutes of Health present their hypothesis and evidence in twopapers published and open for review in the web site Biology Direct.
The scientists suggest that life on Earth originated at photosynthetically-active porous structures, similar to deep-sea hydrothermal vents, made of zinc sulfide (more commonly known as phosphor). They argue that under the high pressure o