Who coined the term zymase for enzymes in yeast

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Zymase":**
- Zymase refers to a group of enzymes that are involved in the fermentation process in yeast. It is a biocatalyst that facilitates the conversion of sugars into alcohol and carbon dioxide.

2. **Identifying the Scientist Associated with Zymase:**
- The question asks who coined the term "zymase." This term was first introduced by a scientist who worked with yeast and its fermentation processes.

3. **Evaluating the Options:**
- The options provided are:
- A) Butcher
- B) Kone
- C) Pasteur
- D) Sumner

4. **Analyzing Each Option:**
- **A) Butcher:** Edward Butcher is credited with isolating zymase and coining the term.
- **B) Kone:** Known for coining the term "enzyme" itself, not zymase.
- **C) Pasteur:** A prominent figure in microbiology, known for his work on fermentation and pasteurization, but not for zymase.
- **D) Sumner:** Recognized for his work in enzymology and the crystallization of enzymes, but he did not coin the term zymase.

5. **Conclusion:**
- Based on the analysis, the correct answer is A) Butcher, as he was the scientist who coined the term zymase for the enzymes found in yeast.

**Final Answer:** The term zymase for enzymes in yeast was coined by Edward Butcher.

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