Which of the following observations most strongly support the view that mitochondria contain electron transport enzymes aggregated into compact association ?

Options

A. (a) Mitochondria have a highly folded inner membrane
B. (b) Disruption of mitochondria yield membrane fragments which are able to synthesize ATP
C. (c) contractile protein able to utilize ATP is found in mitochondria
D. (d) None of the above.

Answer

To answer the question regarding which observation most strongly supports the view that mitochondria contain electron transport enzymes aggregated into compact associations, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Role of Mitochondria**:
- Mitochondria are known as the powerhouse of the cell, where the electron transport chain (ETC) occurs. This process is crucial for ATP production.

2. **Identify the Structure of Mitochondria**:
- Mitochondria have a highly folded inner membrane. These folds increase the surface area available for the electron transport chain enzymes, allowing for efficient ATP synthesis.

3. **Recognize the Function of Electron Transport Chain**:
- The electron transport chain shuttles electrons from NADH and FADH2 to molecular oxygen, which ultimately leads to ATP production. The enzymes involved in this process are embedded in the inner mitochondrial membrane.

4. **Consider the Observations Provided**:
- One key observation is that disruption of mitochondria leads to membrane fragments (known as oxysomes) that can still synthesize ATP. This indicates that the enzymes responsible for ATP synthesis are indeed aggregated in a compact association within these fragments.

5. **Evaluate the Statements**:
- The statement that most strongly supports the idea of electron transport enzymes being aggregated into compact associations is the one that mentions the presence of oxysomes in the inner membrane of mitochondria. These oxysomes contain the necessary enzymes for ATP synthesis, confirming their compact association.

6. **Conclusion**:
- Therefore, the correct observation that most strongly supports the view that mitochondria contain electron transport enzymes aggregated into compact associations is the one stating that "disruption of mitochondria yields membrane fragments which are able to synthesize ATP."

### Final Answer:
The observation that most strongly supports the view that mitochondria contain electron transport enzymes aggregated into compact association is: "Disruption of mitochondria yields membrane fragments which are able to synthesize ATP."

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