Oxidation of glyceraldehyde phosphate is accompanied by

Options

A. Oxidation of `NAD^(+)`
B. Substrate level phosphorylation
C. Reduction of `NAD^(+)`
D. Oxidative phosphorylation.

Answer

**Step-by-Step Solution:**

1. **Understanding Glyceraldehyde Phosphate**: Glyceraldehyde phosphate is an important intermediate in the glycolysis pathway. It is formed during the breakdown of glucose.

2. **Formation of Glyceraldehyde Phosphate**: This molecule is produced in the fourth step of glycolysis, where glucose is converted into two molecules of glyceraldehyde 3-phosphate (G3P).

3. **Phosphorylation**: Once glyceraldehyde phosphate is formed, it undergoes a process called phosphorylation, where a phosphate group is added to the molecule.

4. **Dehydrogenation**: Following phosphorylation, glyceraldehyde phosphate undergoes dehydrogenation. This is a chemical reaction that involves the removal of hydrogen atoms from the molecule.

5. **Oxidation Process**: The dehydrogenation process is also referred to as oxidation because it results in the loss of hydrogen atoms. In this case, glyceraldehyde phosphate loses a pair of hydrogen atoms (two hydrogen ions).

6. **Reduction of NAD+**: During the oxidation of glyceraldehyde phosphate, one of the hydrogen atoms is transferred to NAD+, a coenzyme. This reaction reduces NAD+ to NADH, meaning that NAD+ gains electrons and is thus reduced.

7. **Conclusion**: Therefore, the oxidation of glyceraldehyde phosphate is accompanied by the reduction of NAD+ to NADH.

**Final Answer**: The oxidation of glyceraldehyde phosphate is accompanied by the reduction of NAD+ to NADH.

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