A Biofilm is Often Attached to a Solid Surface and May

Question

A biofilm is often attached to a solid surface and may include all of the following EXCEPT _______.  
A) bacteria
B) algae
C) fungi
D) pili
E) archaea

Accepted Answer

Pili are not part of the biofilm structure. Bacteria, algae, fungi, and archaea are all common members of biofilms.