You hang a microscope slide from a submerged, L-shaped PVC pipe in lake water that is 2 feet deep. The slide hangs 6 inches below the surface of the water and remains there for eight weeks. When you remove it and bring it to your lab for observation, you see that algae, bacteria, and even some fungi have colonized the slide. You determine that you are looking at a(n)
A) biofilm.
B) community of eukaryotes.
C) biological weapon.
D) endotoxin.

Question

Quizplus · Accepted Answer

The presence of multiple types of microorganisms colonizing the slide suggests the formation of a biofilm. A biofilm is a community of microorganisms that adhere to a surface and produce a slimy matrix, providing them with a protective shielding from the surrounding environment, against stresses such as antimicrobial agents or immune cells.

You Hang a Microscope Slide from a Submerged, L-Shaped PVC