Oparin-Haldane's view on the origin of life was first experimentally proved by

Options

A. Malthus
B. Plato
C. Louis pasteur
D. Stanley Miller

Answer

**Step-by-Step Text Solution:**

1. **Understanding Oparin-Haldane's Theory**: The Oparin-Haldane theory proposes that life originated from non-living chemical substances through a process called abiogenesis. This theory suggests that the early Earth had a reducing atmosphere, which facilitated the formation of organic compounds from simple inorganic molecules.

2. **Identifying the Key Experiment**: The theory was experimentally validated by the famous Miller-Urey experiment conducted in 1953. Stanley Miller and Harold Urey designed an experiment to simulate the conditions of early Earth.

3. **Setting Up the Experiment**: In their experiment, Miller and Urey created a closed system that included a mixture of gases thought to be present in the early atmosphere: methane (CH4), ammonia (NH3), hydrogen (H2), and water vapor (H2O). They also included an electrical spark to simulate lightning, which was believed to provide energy for chemical reactions.

4. **Results of the Experiment**: After running the experiment for a week, Miller and Urey found that several amino acids, the building blocks of proteins, had formed. This was significant because it demonstrated that organic compounds could be synthesized from inorganic precursors under conditions that mimicked those of early Earth.

5. **Conclusion**: The results of the Miller-Urey experiment provided experimental support for the Oparin-Haldane theory of the origin of life, showing that life could arise from non-living materials through chemical processes.

6. **Final Answer**: Therefore, the correct answer to the question "Oparin-Haldane's view on the origin of life was first experimentally proved by" is Stanley Miller (and Harold Urey).

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