What Does a Pilus

: a hair or a structure (as on the surface of a bacterial cell) resembling a hair.

What is conjugation in molecular biology?

In molecular biology, conjugation is the transfer of DNA between cells, usually bacteria, by cell-to-cell contact. ( see also transduction; transformation)

Are pili used for motility?

One class of pili, known as type IV pili , not only allow for attachment but also enable a twitching motility. They are located at the poles of bacilli and allow for a gliding motility along a solid surface such as a host cell.