All of the following processes can release `CO_(2)` except

Options

A. alcoholic fermentation
B. oxidative decarboxylation and Krebs' cycle
C. oxidative phosphorylation
D. conversion of `alpha`-ketoglutarc acid to succinic acid.

Answer

To solve the question, "All of the following processes can release CO₂ except," we need to analyze each of the processes listed and determine whether they release carbon dioxide or not.

### Step-by-Step Solution:

1. **Identify the Processes**: The processes mentioned are:
- Alcoholic fermentation
- Oxidative decarboxylation
- Krebs cycle
- Oxidative phosphorylation
- Conversion of alpha-ketoglutaric acid to succinic acid

2. **Understand Each Process**:
- **Alcoholic Fermentation**: This process occurs in yeast and some bacteria, where glucose is converted into ethanol and carbon dioxide. Thus, it releases CO₂.

- **Oxidative Decarboxylation**: This process involves the removal of a carboxyl group from a molecule, releasing CO₂. It is commonly seen in the conversion of pyruvate to acetyl-CoA.

- **Krebs Cycle (Citric Acid Cycle)**: This cycle is a series of chemical reactions used by all aerobic organisms to generate energy. It involves the release of CO₂ as a byproduct.

- **Oxidative Phosphorylation**: This is the final stage of cellular respiration, where ATP is produced using energy derived from electrons transferred through the electron transport chain. Importantly, this process does not produce CO₂.

- **Conversion of Alpha-Ketoglutaric Acid to Succinic Acid**: This step in the Krebs cycle also involves the release of CO₂.

3. **Conclusion**: After analyzing the processes, we find that the only process that does not release CO₂ is **Oxidative Phosphorylation**.

### Final Answer:
**Oxidative Phosphorylation** is the process that does not release carbon dioxide.

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