Choose the incorrect about mitochondria -

Options

A. Has 80S ribosome
B. Naked circular DNA
C. ETS on inner mitochondrial membrane
D. Power house of the cell

Answer

To solve the question regarding the incorrect statement about mitochondria, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding Mitochondria**:
- Mitochondria are double membrane-bound organelles found in eukaryotic cells. They are known as the powerhouse of the cell due to their role in energy production through aerobic respiration.

2. **Evaluating the Options**:
- **Option A**: "Has 80S ribosomes"
- Mitochondria contain 70S ribosomes, which are similar to those found in prokaryotes. This statement is incorrect.

- **Option B**: "Naked circular DNA"
- Mitochondria do possess their own naked circular DNA, which is a characteristic of semi-autonomous organelles. This statement is correct.

- **Option C**: "ETS (Electron Transport System) on the inner mitochondrial membrane"
- The electron transport chain is indeed located on the inner mitochondrial membrane, making this statement correct.

- **Option D**: "Powerhouse of the cell"
- This is a well-known description of mitochondria due to their role in ATP production through aerobic respiration. This statement is also correct.

3. **Identifying the Incorrect Statement**:
- After evaluating all the options, it is clear that **Option A** is the incorrect statement about mitochondria, as they contain 70S ribosomes, not 80S.

### Final Answer:
- The incorrect statement about mitochondria is **Option A: "Has 80S ribosomes."**