EVOLUTION
THE ORIGIN OF LIFE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Life on early Earth required material from space
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Cells survived in the primitive atmosphere
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Amino acids could be produced from inorganic molecules
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Simple cells can be produced in a laboratory
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Detailed explanation-1: -The Miller-Urey experiment provided the first evidence that organic molecules needed for life could be formed from inorganic components. Some scientists support the RNA world hypothesis, which suggests that the first life was self-replicating RNA.
Detailed explanation-2: -In his May 15, 1953, article in Science, “A Production of Amino Acids Under Possible Primitive Earth Conditions, ” Miller identified just five amino acids: aspartic acid, glycine, alpha-amino-butyric acid, and two versions of alanine. Aspartic acid, glycine and alanine are common constituents of natural proteins.
Detailed explanation-3: -The Miller-Urey experiment was a simulation of conditions on the early Earth testing the idea that life, or more specifically organic molecules, could have formed by nothing more than simple chemical reactions. Miller’s success validated the theoretical ideas of A.I.
Detailed explanation-4: -So, the correct answer is ‘Ammonia, methane, hydrogen and water vapour’.
Detailed explanation-5: -In this brilliant experiment, Miller and Urey demonstrated that electrical sparking a mixture of methane, ammonia, and hydrogen in the presence of water produces amino acids within a variety of organic compounds.