The reaction forming 3-phosphoglyceric acid in glycolysis is

Options

A. Cleavage
B. Oxidative phosphorylation
C. Dephosphorylation
D. Oxidative decarboxylation.

Answer

To determine the reaction forming 3-phosphoglyceric acid in glycolysis, we can follow these steps:

1. **Identify the Reaction in Glycolysis**: In glycolysis, the formation of 3-phosphoglyceric acid (3-PGA) occurs at the 7th step of the glycolytic pathway.

2. **Understand the Process**: At this step, a molecule of 1,3-bisphosphoglycerate is converted into 3-phosphoglyceric acid. This reaction involves the removal of a phosphate group from 1,3-bisphosphoglycerate.

3. **Recognize the Type of Reaction**: The removal of a phosphate group is known as dephosphorylation. This process is facilitated by the enzyme phosphoglycerate kinase, which catalyzes the transfer of the phosphate group to ADP, forming ATP.

4. **Identify the Correct Answer**: Given the options provided (cleavage, oxidative phosphorylation, dephosphorylation, and oxidative decarboxylation), the correct reaction that forms 3-phosphoglyceric acid in glycolysis is dephosphorylation.

5. **Conclusion**: Therefore, the correct answer is dephosphorylation.