Pili/fimbriae are surface appendages that help in

Options

A. attachment
B. transduction
C. locomotion
D. all of these

Answer

**Step-by-Step Solution:**

1. **Understanding Pili/Fimbriae**: Pili (or fimbriae) are hair-like structures found on the surface of many bacteria. They are much shorter and thinner than flagella.

2. **Identifying Functions**: The primary functions of pili/fimbriae include:
- **Attachment**: They help bacteria adhere to surfaces, which is crucial for colonization and infection.
- **Transduction**: This refers to the transfer of genetic material between bacteria, typically facilitated by bacteriophages (viruses that infect bacteria). However, this is not a primary function of pili.
- **Locomotion**: This is the movement of bacteria, which is primarily achieved through flagella, not pili.

3. **Analyzing the Options**:
- **Attachment**: This is a key function of pili/fimbriae, allowing bacteria to stick to host tissues or surfaces.
- **Transduction**: While related to genetic transfer, this is not a direct function of pili.
- **Locomotion**: This is primarily associated with flagella, not pili.

4. **Conclusion**: Based on the analysis, the correct answer is that pili/fimbriae help in attachment.

**Final Answer**: Pili/fimbriae are surface appendages that help in attachment.

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