Flagellum is attached to a bacterial cell with the help of

Options

A. Basal hook
B. Basal body
C. Centrosome
D. None

Answer

To answer the question "Flagellum is attached to a bacterial cell with the help of," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Flagellum**:
- The flagellum is a motile organelle found in many bacteria. It plays a crucial role in the movement of bacterial cells.

2. **Identifying the Attachment Mechanism**:
- The flagellum is not directly attached to the bacterial cell wall but is anchored to the cell through a specific structure.

3. **Evaluating the Options**:
- **Option 1: Basal Hook**: This is a short, highly curved tubular structure that connects the flagellum to the bacterial cell. It is indeed the correct answer.
- **Option 2: Basal Body**: This is a system of rings embedded in the cell envelope, which is part of the flagellar structure but does not directly attach the flagellum to the cell.
- **Option 3: Centrosome**: This is a structure found in eukaryotic cells, composed of centrioles, and is not related to bacterial flagella.
- **Option 4: None**: This option is incorrect as we have identified the correct attachment structure.

4. **Conclusion**:
- The flagellum is attached to a bacterial cell with the help of the **Basal Hook**.

### Final Answer:
The correct answer is **Basal Hook**.

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