EVOLUTION
THE ORIGIN OF LIFE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cyanobacteria produced oxygen
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cells acquired mitochondria through endosymbiosis
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earth is 4.6 billion years old
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electricity passed through Earth’s early atmosphere created organic compounds
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Detailed explanation-1: -The experiments showed that simple organic compounds of building blocks of proteins and other macromolecules can be formed from gases with the addition of energy.
Detailed explanation-2: -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.
Detailed explanation-3: -In their famous experiment, Miller and Urey replicated the early Earth atmosphere with a mixture of methane, hydrogen, ammonia and water vapor. This mixture, along with some “sparks” which simulated lightning, led to the formation of amino acids.
Detailed explanation-4: -The two biologists made use of methane, water, hydrogen, and ammonia which they considered were found in the early earth’s atmosphere. The chemicals were sealed inside sterile glass tubes and flasks connected together in a loop and circulated inside the apparatus.