A) Amino acids
B) Nucleic acids
C) UV radiations
D) Microspheres
Correct Answer: A
Solution :
In 1953, Stanley Miller synthesized organic compounds under conditions resembling the primitive atmosphere of the Earth, a mixture of water vapour, methane, hydrogen and ammonia (last three in ratio of 1 : 2 : 2) was circulated through a closed apparatus by steam from boiling water and subjected to an electric spark discharge (7,000 volt) between tungston electrodes. This apparatus was permitted to run for a week. The result was several amino acids.
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