The scientist who conducted experiment on killed yeast to disprove the theory of spontaneous generation of life was

Options

A. Stanley Miller
B. J.B.S Haldane
C. Louis Pasteur
D. A.I. Oparin

Answer

**Step-by-Step Solution:**

1. **Understanding Spontaneous Generation**: The theory of spontaneous generation posited that living organisms could arise from non-living matter. This idea suggested that life could spontaneously emerge under certain conditions.

2. **Identifying the Scientist**: To disprove this theory, various scientists conducted experiments. One of the most notable figures in this context is Louis Pasteur.

3. **Pasteur's Experiment**: Louis Pasteur conducted experiments using killed yeast. He used sterilized flasks to demonstrate that when these flasks were sealed (preventing exposure to air), no life forms developed from the killed yeast. This indicated that life did not arise spontaneously from non-living matter.

4. **Conclusion of the Experiment**: Pasteur's findings showed that life comes only from pre-existing life. When the flasks were open to the air, new living organisms did arise, confirming that they originated from existing microorganisms in the air, not from the killed yeast itself.

5. **Final Answer**: Therefore, the scientist who conducted the experiment on killed yeast to disprove the theory of spontaneous generation is Louis Pasteur.

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