Answer:
Fimbriae
Step-by-step explanation:
Fimbriae are hair-like structures made up of proteins, that surround the outer surface of a bacterium. It helps them stick to the surfaces, tissues, and even other cells. The term fimbriae is often interchanged with pilli but pilli are longer. They are found in both gram negative and gram positive bacteria.
Attached is a picture of a bacterium.