Formation of phosphoenol pyruvate from 2-phosphoglycerate is

Options

A. Dehydration
B. Dehydrogenation
C. Oxidation
D. Hydration.

Answer

**Step-by-Step Solution:**

1. **Identify the Reaction**: The question asks about the conversion of 2-phosphoglycerate to phosphoenolpyruvate, which occurs during glycolysis.

2. **Recognize the Enzyme Involved**: This conversion is catalyzed by the enzyme enolase. Enzymes are biological catalysts that speed up chemical reactions.

3. **Understand the Process**: During this reaction, 2-phosphoglycerate undergoes a transformation where it loses a water molecule (H2O). This process is crucial for the formation of phosphoenolpyruvate.

4. **Define the Type of Reaction**: The loss of a water molecule in a chemical reaction is termed "dehydration." Therefore, the conversion of 2-phosphoglycerate to phosphoenolpyruvate is a dehydration reaction.

5. **Role of Magnesium Ions**: Magnesium ions (Mg²⁺) are often required as a cofactor for the enzyme enolase to function effectively, facilitating the reaction.

6. **Conclusion**: The formation of phosphoenolpyruvate from 2-phosphoglycerate occurs through a dehydration reaction, catalyzed by the enzyme enolase in the presence of magnesium ions.

**Final Answer**: The formation of phosphoenolpyruvate from 2-phosphoglycerate is by the process of dehydration.

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