In photorespiration glycolate is converted to `CO_(2)` and serine in

Options

A. Mitochondria
B. Chloroplast
C. Peroxisome
D. Vacuole

Answer

**Step-by-Step Solution:**

1. **Understanding Photorespiration**: Photorespiration is a process that occurs in plants when the enzyme RuBisCO fixes oxygen instead of carbon dioxide, leading to the production of glycolate.

2. **Formation of Glycolate**: In the chloroplast, ribulose bisphosphate (RuBP) reacts with oxygen (O2) instead of carbon dioxide (CO2), resulting in the formation of phosphoglycolate, which is then converted to glycolate.

3. **Pathway of Glycolate**: Glycolate produced in the chloroplast is transported to the peroxisome, where it is converted into glyoxylate. During this conversion, hydrogen peroxide is also broken down.

4. **Conversion to Glycine**: In the peroxisome, glyoxylate is converted into glycine. This step involves the removal of hydrogen peroxide.

5. **Role of Mitochondria**: The glycine produced in the peroxisome is then transported to the mitochondria. In the mitochondria, glycine undergoes a series of reactions where it is converted into serine. This process also releases carbon dioxide (CO2) and ammonia.

6. **Final Products**: The final products of this pathway are serine and CO2, confirming that glycolate is converted to CO2 and serine in the mitochondria.

7. **Conclusion**: Therefore, in photorespiration, glycolate is converted to CO2 and serine primarily in the mitochondria.

**Final Answer**: The correct answer is mitochondria.

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