The uniqueness of bacterial Flagella is that it is

Options

A. Mono fibrillar
B. Has 9 + 2 arrangement
C. Multi fibrillar
D. Has 2 + 9 arrangment

Answer

To answer the question about the uniqueness of bacterial flagella, let's break down the information step by step.

### Step-by-Step Solution:

1. **Understanding Flagella**:
- Flagella are whip-like structures that enable movement in various organisms. They can be found in both prokaryotic (bacteria) and eukaryotic (like sperm cells) cells.

2. **Types of Flagella**:
- Eukaryotic flagella have a well-defined structure known as the "9 plus 2" arrangement, which consists of 9 pairs of microtubules surrounding 2 central microtubules. This is a characteristic feature of eukaryotic cells.

3. **Prokaryotic Flagella**:
- Bacterial flagella, which are prokaryotic, differ significantly from eukaryotic flagella. They do not have the "9 plus 2" arrangement. Instead, they consist of a single helical filament.

4. **Structure of Bacterial Flagella**:
- The bacterial flagellum is made up of three main parts:
- **Filament**: The long, thin part made of a protein called flagellin.
- **Hook**: A curved structure that connects the filament to the basal body.
- **Basal Body**: Anchors the flagellum to the cell wall and membrane.

5. **Unique Arrangement**:
- The bacterial flagellum is described as "monofibrillar," meaning it is composed of a single fibril (or filament). This is in contrast to the eukaryotic flagella which have multiple fibrils arranged in a specific pattern.

6. **Conclusion**:
- Therefore, the uniqueness of bacterial flagella is that they are monofibrillar, which distinguishes them from the eukaryotic flagella that have a "9 plus 2" arrangement.

### Final Answer:
The uniqueness of bacterial flagella is that it is **monofibrillar**.

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