E. Barnes, Professional Gamer, Professional Gamer, Washington
Answered Jun 04, 2019
The correct answer to this question is C, Secreted slime layer. Pili are appendages, which resemble hair. They can be found on archaea and bacteria. The word pili can also refer to the composition of pilin proteins.
These proteins are oligomeric. Many bacteria and viruses use the pili as a way to attach onto and reproduce. Pili are very fragile, and because of this, they are always replaced. There are various types of pili. One is conjugative pili, which is how DNA is transferred from many bacteria. There are also Type IV pili, which helps generate motile forces.