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

Nervous tissue, types of neuron according to function

types of neuron according to function

Rh blood group, what is diffrence between rh positive and rh negative

what is diffrence between rh positive and rh negative

Explain primary processing of oilseeds and pulse products, Pulse products: ...

Pulse products: The important processed pulse products are puffed chickpea and pea,  besan, papads, pulse-based weaning foods, quick cooking dhals, and canned dry peas   Oils

Venus-the clouded planet, Venus-the Clouded Planet Venus, our nearest p...

Venus-the Clouded Planet Venus, our nearest planetary neighbour, only 40 million km away, has its surface hidden from view by a dense yellowish-white cloud, which extends to 80

What is tongue, What is Tongue? The tongue is a major organ. You will a...

What is Tongue? The tongue is a major organ. You will agree that the tongue precisely reflects the state of our digestive system. How? Well, you may have experienced that occas

Media and educational environment, Media and Educational Environment: S...

Media and Educational Environment: Some  recent technological developments  in media, have opened up new horizons. Besides, increasing use of media, to support and expand educa

The solar system, how many known plam nets are in our solar system

how many known plam nets are in our solar system

Exploration of resources, Exploration of resources Exploration of re...

Exploration of resources Exploration of resources  involves complex techniques which depend on the physical, chemical and biological properties of a particular resource. Now

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