Which of the following statements is correct regarding Mitochondria ?

Options

A. Matrix possesses single ds circular DNA molecule and ribosomes of 70S type.
B. Site of aerobic and anaerobic respiration
C. Outer membrane forms the continuous limiting boundary of the organelle , while inner membrane is folded into cristae .
D. Mitochondria divide by fission like division to increases its number.

Answer

To determine which statement regarding mitochondria is correct, we will analyze each statement provided in the question step by step.

### Step-by-Step Solution:

1. **Evaluate the First Statement:**
- The first statement claims that "the matrix possesses the single circular DNA molecule and ribosomes of 70s type."
- **Analysis:**
- Mitochondria do indeed contain a single circular DNA molecule, which is characteristic of prokaryotic cells. However, the ribosomes present in mitochondria are of the 70S type, which is also true.
- **Conclusion:** This statement is correct regarding the presence of single circular DNA and 70S ribosomes in the matrix.

2. **Evaluate the Second Statement:**
- The second statement claims that mitochondria are the site of both aerobic and anaerobic respiration.
- **Analysis:**
- Mitochondria are primarily known for aerobic respiration, which occurs in the presence of oxygen. Anaerobic respiration, on the other hand, typically occurs in the cytoplasm and not within mitochondria.
- **Conclusion:** This statement is incorrect because mitochondria are not the site of anaerobic respiration.

3. **Evaluate the Third Statement:**
- The third statement claims that "the outer membrane forms the continuous limiting boundary of the organelle while the inner membrane is folded into the cristae."
- **Analysis:**
- This statement accurately describes the structure of mitochondria. The outer membrane does indeed form a continuous boundary, while the inner membrane is folded into structures known as cristae, which increase the surface area for biochemical reactions.
- **Conclusion:** This statement is correct.

4. **Evaluate the Fourth Statement:**
- Since the question only provided three statements, we will conclude our analysis here.

### Final Conclusion:
- The correct statement regarding mitochondria is the third statement: "the outer membrane forms the continuous limiting boundary of the organelle while the inner membrane is folded into the cristae."