Question

A slimy layer of bacteria coating a surface is also known as a ________. a slimy layer of bacteria coating a surface is also known as a ________. bioaggregate plague biofilm tissue

Answer 1

A slimy layer of bacteria coating a surface is also known as a biofilm. 
Biofilms can be formed by a single bacterial species, however they are more often consist of many species of bacteria, as well as fungi, algae, protozoa, debris, and corrosion products. A biofilm may form on any surface exposed to bacteria and some amount of water. 

Answer 2

A slimy layer of bacteria coating a surface is also known as a biofilm.
A biofilm is a group of microorganisms where microbial cells adhere to each other on a surface (living or non-living) and produce a  matrix of extracellular polymeric substance. For example, biofilms can form on the teeth creating a dental plaque, which can cause tooth decay and gum disease.