The Urey-Miller experiment determined which of the following results?
Correct answer: D. Organic molecules can arise from inorganic precursors
- A. DNA replicates by semi-conservative replication
- B. Cyanobacteria were responsible for the oxygenation of the atmosphere
- C. The early atmosphere was composed of ammonia and methane
- D. Organic molecules can arise from inorganic precursors
Explanation
The Urey-Miller experiment was a groundbreaking study that demonstrated that organic molecules, like amino acids, could be formed from inorganic substances under conditions thought to resemble those of the early Earth. This provided crucial evidence for theories about the chemical origins of life. The other options, while relevant to Earth's history or biology, do not pertain to the primary outcome of the Urey-Miller experiment: the synthesis of organic compounds from inorganic precursors.
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