NEET BIOLOGY

GENETICS AND EVOLUTION

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What result did Miller-Urey attain that showed how life on Earth may have begun?
A
An anaerobic atmosphere, with electricity, produces organic compound
B
Meteorite contained a mix of organic compounds
C
Earth’s prebiotic oceans were capable of sustaining carbon-based life
D
Organic compounds are capable of dividing by binary fission
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: -Miller mixed four simple chemicals in glass tubes, which were heated and shocked with electrical sparks to mimic lightning. The experiment made several amino acids, the building blocks of proteins. The Miller-Urey experiment showed that the chemicals of life could form naturally.

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