Enzymes (Biocatalysts) were discovered accidentally in yeast cell extract by a biochemist for which he was awarded Nobel Prize was

Options

A. Kuhne
B. Pasteur
C. Buchner
D. Sumner

Answer

### Step-by-Step Text Solution:

1. **Understanding the Context**: The question asks about the discovery of enzymes as biocatalysts, specifically mentioning that it was done accidentally in yeast cell extract.

2. **Historical Background**: In the 19th century, scientists were investigating the role of microorganisms in fermentation processes. It was established that certain microbes, particularly yeast, were responsible for fermentation.

3. **Key Discovery**: In 1897, a biochemist named Edward Buchner conducted an experiment using yeast extract that did not contain any living yeast cells. He found that this extract could still ferment sugar to produce alcohol.

4. **Significance of the Experiment**: Buchner's experiment demonstrated that living organisms were not necessary for fermentation to occur. Instead, there were substances (later identified as enzymes) in the yeast extract that facilitated the biochemical reaction.

5. **Recognition**: For his groundbreaking work in discovering enzymes and their role as biocatalysts, Edward Buchner was awarded the Nobel Prize in Chemistry in 1907.

6. **Conclusion**: Therefore, the biochemist who accidentally discovered enzymes in yeast cell extract and was awarded the Nobel Prize is Edward Buchner.

### Final Answer:
Edward Buchner

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