Oxysome of mitochondria are concerned with :-

Options

A. Photophsphorylation
B. Oxidative phosphorylation
C. Photorespiration
D. Digestion

Answer

### Step-by-Step Solution:

1. **Understanding Oxysomes**: Oxysomes, also known as ATP synthase, are enzyme complexes located in the inner membrane of mitochondria.

2. **Structure of Oxysomes**: They consist of two main parts:
- **F0 Part**: This is the base of the enzyme, embedded in the inner mitochondrial membrane.
- **F1 Part**: This is the head of the enzyme, which protrudes into the mitochondrial matrix.

3. **Role in ATP Production**: The primary function of oxysomes is to facilitate the production of ATP. This occurs through a process called oxidative phosphorylation.

4. **Creation of Proton Gradient**: During cellular respiration, electrons are transferred from NADH and FADH2 to oxygen. This electron transfer creates a proton gradient (H+ ions) across the inner mitochondrial membrane, with a higher concentration of protons in the intermembrane space compared to the mitochondrial matrix.

5. **Function of Oxysomes**: The oxysomes utilize the energy from the proton gradient to transport H+ ions back into the mitochondrial matrix. As protons flow through the F0 part of the ATP synthase, it drives the conversion of ADP and inorganic phosphate (Pi) into ATP in the F1 part.

6. **Conclusion**: Therefore, the oxysomes of mitochondria are primarily concerned with the process of oxidative phosphorylation, which is the mechanism by which ATP is produced in cells.

### Final Answer:
Oxysomes of mitochondria are concerned with **oxidative phosphorylation**.