Miller experiment, Science

Assignment Help:

Miller's  Experiment

The above theory could be tested by  recreating  in  the laboratory on a small scale, the conditions which must have existed when life originated on the earth.  

 

2427_Millers  Experiment.png

Miller, an American biologist subjected a gaseous mixture of methane, ammonia, water vapour and hydrogen in a closed flask at 80°C  to electric sparking, foa week. This mixture, with its temperature, and electric discharge through it, represented a situation  that might have prevailed on the earth before  life came into existence. When the contents of  the flask were examined a week later, theywere found to have amino acids which are essential for the formation of  proteins. As we have said before, proteins are the essential building blocks for living organisms. With the making, in  the laboratory, of molecules related  to life, the credibility of  the Oparin-Haldane theory of chemical evolution greatly increased. Many amino acids have been obtained, since by this method. So also some sugars and nitrogenous bases which are otherwise found in the nucleus of  a cell, which is a unit of  living organisms. Similar experiments have led to the production of various compounds which form many kinds of  fats and important natural pigments. Miller's experiment  thus forms a turning point  in our approach to the problem of  the origin of  life. The evidence, we get from Miller's  experiment, is supported by evidence of  similar chemical reactions occurring in  space even today. Chemical analysis of a meteorite which fell near Murchi Murchison in Australia, in  1969, shqwed the presence of  organmolecules. The  types and relative proportions of  these molecules were very similar to the products  formed in Miller's  experiment. The presence of organic molecules like methane, ethane, formaldehyde, acetyle'ne etc. has been shown in interstellar space by radioastronomy also.  


Related Discussions:- Miller experiment

Mixed reality, #i do not know how to write assignment on it..

#i do not know how to write assignment on it..

Making a simple reflecting telescope, Making a simple reflecting telescope ...

Making a simple reflecting telescope A simple reflecting telescope can be made from a concave mirror obtained from a shaving mirror. The mirror is arranged wooden box of suitabl

Oxidising substances , Oxidising Substances : It includes oxidising substa...

Oxidising Substances : It includes oxidising substances and the organic peroxides. Oxidising substances are by themselves not combustible but by feeding oxygen to other substances

Explain coal, What is coal? The remains of trees and shrubs grew milli...

What is coal? The remains of trees and shrubs grew millions of years ago, when the weather was mild and moist.

Science, hi can you help me on my science

hi can you help me on my science

Risk assessment on the use of malathion, How would I give a presentation to...

How would I give a presentation to the public on the use of Malathion as a means to control mosquitos

What did you learn about yourself, Question: what did you learn about yours...

Question: what did you learn about yourself from reading the other theories of personality?list and explain at least three things.) There is no doubt that it was very knowledgeabl

Acidic waste bromine waste , Apart from acidic waste, bromine waste is also...

Apart from acidic waste, bromine waste is also treated using this method. Exercises Examples: Perchloric acid, sulphuric acid, hydrochloric acid, nitric acid, phosphoric acid

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd