who proved chemical origin of life or origin of biochemical noncatalytically from simple substance?

Options

A. Oparin
B. Darwin
C. Haldane
D. Miller

Answer

To answer the question "Who proved the chemical origin of life or origin of biochemical non-catalytically from simple substances?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept**: The question refers to the chemical origin of life, which suggests that life originated from simple inorganic substances through chemical reactions, forming complex organic molecules.

2. **Identify Key Figures**: The options provided are Operin, Darwin, Haldane, and Miller. Each of these figures contributed to our understanding of the origin of life in different ways.

3. **Review the Miller-Urey Experiment**: The Miller-Urey experiment, conducted in 1952 by Stanley Miller and Harold Urey, is a significant experiment that simulated the conditions of early Earth. It demonstrated that organic compounds, such as amino acids, could be synthesized from inorganic precursors under conditions thought to resemble those of the primitive Earth.

4. **Analyze the Contributions**:
- **Operin and Haldane**: They proposed the hypothesis regarding the origin of life from inorganic substances but did not conduct experiments to prove it.
- **Darwin**: He is known for his theory of natural selection, which does not directly address the chemical origin of life.
- **Miller**: His experiment provided empirical evidence supporting the theory of the chemical origin of life.

5. **Conclusion**: Based on the information, the correct answer to the question is **Miller**, as he proved the chemical origin of life through his experimental work.

### Final Answer:
The correct option is **Miller**.

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