a.) State the hypothesis which S.L. Miller tried to prove in the laboratory with the help of the set up given above.
b.) Name the organic compound observed by him in the liquid water at the end of his experiment.
c.) A scientist simulated a similar set up and added CH4, NH3 and water vapour at 800°C. Mention the important component that is missing in his experiment?
Answers
Answer:
Explanation:
Key points:
The Earth formed roughly 4.54.54, point, 5 billion years ago, and life probably began between 3.53.53, point, 5 and 3.93.93, point, 9 billion years ago.
The Oparin-Haldane hypothesis suggests that life arose gradually from inorganic molecules, with “building blocks” like amino acids forming first and then combining to make complex polymers.
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. Others favor the metabolism-first hypothesis, placing metabolic networks before DNA or RNA.
Simple organic compounds might have come to early Earth on meteorites.
He based his calculations on the (then) widely held view that the early atmosphere was reducing, and concluded that the main constituents were methane (CH4), ammonia (NH3), hydrogen (H2), and water (H2O).
He sent an electrical charge through a flask of a chemical solution of methane, ammonia, hydrogen and water. This created organic compounds including amino acids