Which of the following is phosphorylating unit?

Options

A. Microsome
B. Peroxisome
C. Oxysome
D. Lomasome

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the "phosphorylating unit" among the given options. Phosphorylation is a biochemical process where a phosphate group is added to a molecule, often to activate or deactivate its function.

2. **Identifying the Location of Phosphorylation**: Phosphorylation primarily occurs in the inner mitochondrial membrane, where ATP synthesis takes place.

3. **Analyzing the Options**: The options provided are:
- Microzone
- Pereoxyzone
- Loma zone
- Oxyzone

4. **Examining Each Option**:
- **Microzone**: Located in the endoplasmic reticulum, not involved in phosphorylation.
- **Pereoxyzone**: Found in the cytoplasm, not related to phosphorylation.
- **Loma zone**: Also present in the cytoplasm, not a phosphorylating unit.
- **Oxyzone**: Found in the inner mitochondrial membrane and is also known as F1 particles, which are directly involved in ATP synthesis.

5. **Conclusion**: Based on the analysis, the oxyzone is identified as the phosphorylating unit because it is involved in the process of ATP synthesis in the mitochondria.

**Final Answer**: Oxyzone is the phosphorylating unit.

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