Quorum sensing is a regulatory system that requires a certain cell density to work effectively. Each of the following activities utilizes quorum sensing EXCEPT
A) Staph aureus infection.
B) transition of Candida albicans from budding yeast to elongated filaments.
C) flagella synthesis in Proteus vulgaris.
D) light emission by Aliivibrio fischeri.

Question

Quizplus · Accepted Answer

Quorum sensing is a mechanism used by bacteria and some fungi for communication and coordination of group behaviors based on cell density. It involves the production and detection of signaling molecules called autoinducers. Activities A, B, and D (Staphylococcus aureus infection, transition of Candida albicans from budding yeast to elongated filaments, and light emission by Aliivibrio fischeri, respectively) are known to be regulated by quorum sensing. However, flagella synthesis in Proteus vulgaris is not typically regulated by quorum sensing; instead, it is more related to individual cell responses to environmental stimuli, such as changes in viscosity or the presence of surfaces, rather than a group behavior coordinated by cell density.

Quorum Sensing Is a Regulatory System That Requires a Certain