AP BIOLOGY

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EVOLUTION

THE ORIGIN OF LIFE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The Miller-Urey experiment was a famous experiment designed to test whether life on early Earth could have been created by the energy of lightning causing gaseous molecules in Earth’s atmosphere to combine into amino acids. The experiment created a model of life on early Earth by using a set of gases and a spark of electricity to represent lightning. What combination of gases should the experiment have used?
A
The gases that are most likely to produce life
B
the gases that are least likely to produce life
C
the same gases that are present in today’s atmosphere
D
the gases that were present in the atmosphere of early Earth
Explanation: 

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: -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.

Detailed explanation-3: -In 1953 American chemists Harold C. Urey and Stanley Miller tested the Oparin-Haldane theory and successfully produced organic molecules from some of the inorganic components thought to have been present on prebiotic Earth.

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