The path of glucose breakdown to pyruvic acid was discovered by

Options

A. Embden, Meyerhof, and Parnas
B. Warburg and Dicken
C. Sir Hans Kreb
D. Calvin

Answer

To solve the question regarding the discovery of the pathway of glucose breakdown to pyruvic acid, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks who discovered the pathway that breaks down glucose into pyruvic acid.

2. **Identifying the Process**: The process of glucose breakdown is known as glycolysis. This is a crucial metabolic pathway that converts glucose into pyruvic acid.

3. **Recognizing the Scientists Involved**: The glycolysis pathway was discovered by three scientists: Gustav Embden, Otto Meyerhof, and Jakub Karol Furnas. Their contributions are collectively recognized in the naming of the pathway.

4. **Naming the Pathway**: The glycolysis pathway is also referred to as the EMP pathway, which stands for Embden-Meyerhof-Parnas pathway, named after the three scientists.

5. **Evaluating the Options**: The options provided in the question include:
- A) Embden, Meyerhof, and Parnas
- B) Barberg and Deakin
- C) Sir Hans Krebs
- D) Kelvin

Based on our understanding, the correct answer is option A, which corresponds to Embden, Meyerhof, and Parnas.

6. **Conclusion**: Therefore, the pathway of glucose breakdown to pyruvic acid was discovered by Embden, Meyerhof, and Parnas.

### Final Answer:
The pathway of glucose breakdown to pyruvic acid was discovered by **Embden, Meyerhof, and Parnas**.

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