Pili are hollow, non helical, filamentous appendages in bacteria. Which one is not true for pili:
Correct answer: D. These are present in gram-positive bacteria
- A. They are involved in mating process
- B. They are the means of attachments of bacteria to various surfaces
- C. They are made up of protein
- D. These are present in gram-positive bacteria
Explanation
Pili are a characteristic of Gram-negative bacteria.
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