Which of the following is a possible function of a bacterial pilus?

• A. Protein translation
• B. Synthesis of ATP
• C. Attachment to host cells
• D. Motility via flagellar rotation

Answer: (C)

Verified step by step guidance

1. Understand that bacterial pili are hair-like appendages on the surface of many bacteria, primarily involved in interactions with their environment.
2. Recall that pili are not involved in internal cellular processes such as protein translation or ATP synthesis, which occur inside the cell.
3. Recognize that pili often function in attachment, allowing bacteria to adhere to host cells or surfaces, which is crucial for colonization and infection.
4. Differentiate pili from flagella, as flagella are responsible for motility through rotation, whereas pili do not provide motility by themselves.
5. Conclude that among the options, the function 'Attachment to host cells' correctly describes a possible role of bacterial pili.