Pili in bacteria represent

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(B) Pili are elongated,tubular structures made of a special protein called pilin.They are surface appendages found on many bacteria,especially Gram-ne

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Protoplasmic outgrowths of donor cells

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(B) Pili are elongated,tubular structures made of a special protein called pilin.They are surface appendages found on many bacteria,especially Gram-negative bacteria.In the context of bacterial conjugation,the sex pilus acts as a bridge to transfer genetic material from a donor cell to a recipient cell.Therefore,they are considered protoplasmic outgrowths of donor cells involved in conjugation.

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