Which of the following an example of a biofilm?
A) soap scum
B) dental plaque
C) marine diatom
D) planktonic microcolony

Question

Quizplus · Accepted Answer

Biofilms are communities of microorganisms that adhere to surfaces and secrete a matrix of proteins and polysaccharides that protects and anchors the cells. Dental plaque is a well-known example of a biofilm. Soap scum is a buildup of minerals on surfaces from hard water and is not a biofilm. Marine diatoms are unicellular algae that do not form biofilms. Planktonic microcolonies are not biofilms as they are not attached to surfaces.

Which of the Following an Example of a Biofilm