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Question
Who gave experimental proof that hydrogen, methane, water and ammonia gave rise to amino acids?
Who gave experimental proof that hydrogen, methane, water and ammonia gave rise to amino acids?
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Solution
The correct option is A Stanley Miller
According to Oparin, the conditions that prevailed on primitive earth about 4 million years ago were ideal for chemical evolution. The primitive atmosphere of earth was reducing atmosphere that lack molecular oxygen but was rich in water vapour, carbon monoxide, carbon dioxide, nitrogen and hydrogen. Absence of oxygen allowed the formed peptides to remain unspoiled and facilitated further chemical reactions to produce more complex protein structures. The high temperature, UV light and lightening served as energy source for polymerization of amino acids. Absence of living organisms prevented degradation of peptides by microbes. Miller and Urey provided first proof for chemical synthesis of proteins by amino acids. They simulated the primitive earth conditions as proposed by Oparin and synthesized simple organic compounds (amino acids, fatty acids sugars etc) from a mixture of methane, hydrogen, water vapour and ammonia. Darwin proposed the theory of natural selection to explain the process of evolution. Natural selection refers to unequal ability of individuals to survive and reproduce based on suitability of their inherited characters to prevailing environmental conditions. According to inheritance of acquired characters, a theory given by Lamarck, individual acquire characters under influence of needs as posed as changing environmental conditions, these characters are inherited. He explained evolution the long-necked giraffes from short-necked giraffes on the basis of his theory.Therefore, the correct answer is option A.
According to Oparin, the conditions that prevailed on primitive earth about 4 million years ago were ideal for chemical evolution. The primitive atmosphere of earth was reducing atmosphere that lack molecular oxygen but was rich in water vapour, carbon monoxide, carbon dioxide, nitrogen and hydrogen. Absence of oxygen allowed the formed peptides to remain unspoiled and facilitated further chemical reactions to produce more complex protein structures. The high temperature, UV light and lightening served as energy source for polymerization of amino acids. Absence of living organisms prevented degradation of peptides by microbes.
Miller and Urey provided first proof for chemical synthesis of proteins by amino acids. They simulated the primitive earth conditions as proposed by Oparin and synthesized simple organic compounds (amino acids, fatty acids sugars etc) from a mixture of methane, hydrogen, water vapour and ammonia. Darwin proposed the theory of natural selection to explain the process of evolution. Natural selection refers to unequal ability of individuals to survive and reproduce based on suitability of their inherited characters to prevailing environmental conditions.
According to inheritance of acquired characters, a theory given by Lamarck, individual acquire characters under influence of needs as posed as changing environmental conditions, these characters are inherited. He explained evolution the long-necked giraffes from short-necked giraffes on the basis of his theory.
Therefore, the correct answer is option A.
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