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Mention the differences between pili and fimbriae.
Answer

Pili

Fimbriae

1. These are elongate tubular structures.

2. They are present mainly in Gram -ve bacteria.

3. They are involved in mating process and form conjugation tube.

4. These are not responsible in connecting cells.

1. These are small bristle like fibres.

2. They are present both in Gram +ve and Gram -ve bacteria.

3. They have no role in mating.

4. These are responsible for connecting cells.