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

Moods - minnesota multiphasic personality inventory, Mr. X is probably well...

Mr. X is probably well adjusted (Mt=42). Neither he nor others see him as anxious (Pt=59), and he either denies or does not experience depressiveness (DEP=41). He does not wake up

Analyse the human - ecosystem interactions, Question 1 Analyse the Huma...

Question 1 Analyse the Human - Ecosystem interactions Question 2 Discuss the importance of PPP in attaining sustainability Question 3 Explain the Benefits and c

Physico-chemical properties of biotin, Important physico-chemical propertie...

Important physico-chemical properties of biotin include  the following: a)  It forms colourless, needle shaped crystals. b)  The vitamin is sparingly soluble in  cold water

How to calculate the mass of atoms in amus , How to Calculate the Mass of A...

How to Calculate the Mass of Atoms in AMU's ? To calculate the masses of atoms we need only know the numbers of the various subatomic particles within the nucleus. For our purp

Explain the dialysis, Explain the Dialysis   By now, you must have w...

Explain the Dialysis   By now, you must have well understood the functions of kidney and the implications of abnormal kidney functioning as well. Here in this section, we sh

Water borne diseases, Water Borne Diseases: Diseases like cholera and t...

Water Borne Diseases: Diseases like cholera and typhoid, as well as diarrhoea and dysentery,  are spread through water. Germs of  these diseases multiply in the gut of  the inf

Explain the formation of sedimentary rocks, Explain the Formation of sedime...

Explain the Formation of sedimentary rocks? Lithification refers to the processes by which loose sediments are consolidated into new rock material. One of the most common forms

Stellar parallax, Stellar Parallax If  the Earth were stationary, a giv...

Stellar Parallax If  the Earth were stationary, a given line  joining  point A on the Earth, a nearby star C and any given distant star would never vary. However, if  the Earth

Introduction to fire hazards, INTRODUCTION : In the first unit of this blo...

INTRODUCTION : In the first unit of this block you read about hazards due to electricity and gases in the science laboratories. 'The second unit deals with yet another type of com

Genetics, my topic is QTL mapping of Aedes and Drosophila and I am not gett...

my topic is QTL mapping of Aedes and Drosophila and I am not getting proper information for making an assignment on it what should I do?

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