Small paticles projecting from inner surfaces of cristae and inner mitochondrial membrane are

Options

A. Microsomes
B. Oxysomes
C. Myeloid bodies
D. Informosomes

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about small particles that project from the inner surfaces of cristae and the inner mitochondrial membrane.

2. **Analyzing the Options**:
- **Option 1: Microsomes**: Microsomes are vesicles derived from fragmented endoplasmic reticulum and contain cytochrome P450, which is involved in drug metabolism. They are not found in the mitochondria. Thus, this option is incorrect.

- **Option 2: Oxysomes**: Oxysomes, also known as F1 particles, are indeed found on the inner mitochondrial membrane. They appear as knob-like structures that project into the mitochondrial matrix. They are involved in ATP synthesis, making this option the correct answer.

- **Option 3: Myeloid Bodies**: Myeloid bodies are associated with the smooth endoplasmic reticulum and are not related to the mitochondrial structure. Therefore, this option is incorrect.

- **Option 4: Photosynformosomes**: These are not standard terms in cellular biology. The closest term, ribonucleoprotein particles, refers to complexes involved in RNA processing and are not found in mitochondria. Hence, this option is also incorrect.

3. **Conclusion**: The small particles projecting from the inner surfaces of cristae and the inner mitochondrial membrane are **Oxysomes** (F1 particles).

### Final Answer:
**Oxysomes (F1 particles)**

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