Glyceraldehyde 3-phosphate is oxidised to 1-3 biphosphoglyceric acid alongwith

Options

A. Release of elecrons for reducing `NAD^(+)`
B. ATP synthesis
C. Release of phosphate group
D. Release of `H^(+)" and e^(-)` for forming NADH.

Answer

To solve the question regarding the oxidation of Glyceraldehyde 3-phosphate (G3P) to 1,3-bisphosphoglyceric acid (1,3-BPG), we will break down the process step by step.

### Step-by-Step Solution:

1. **Understanding the Reaction**:
- Glyceraldehyde 3-phosphate (G3P) is a three-carbon sugar phosphate that undergoes oxidation during glycolysis to form 1,3-bisphosphoglyceric acid (1,3-BPG).

2. **Identifying the Enzyme**:
- The enzyme responsible for this conversion is glyceraldehyde 3-phosphate dehydrogenase. This enzyme facilitates the oxidation of G3P.

3. **Oxidation Process**:
- During the oxidation of G3P, it reacts with inorganic phosphate (Pi). This reaction involves two key processes: phosphorylation and dehydrogenation.

4. **Phosphorylation**:
- In the phosphorylation step, an inorganic phosphate group is added to G3P, resulting in the formation of 1,3-BPG. This addition is crucial as it stores energy in the form of a high-energy phosphate bond.

5. **Dehydrogenation**:
- Concurrently, during the oxidation, two hydrogen atoms are released. One hydrogen atom is used to reduce NAD+ to form NADH, while the other hydrogen atom remains in the cytosol.

6. **Conclusion**:
- Therefore, the oxidation of G3P to 1,3-BPG results in the release of hydrogen and electrons, which contributes to the formation of NADH.

### Final Answer:
The correct option is **d) release of hydrogen and electron for forming NADH**.

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