What is quorum sensing?

It is the process which makes the bacteria able to know whether they made a quorum or not. it is done by the release of auto inducers/ pheromones which are recognized by these bacteria, and the more concentrated the more it means that we have a quorum, and thus activating bioluminescence/ virulence. We may also have a low density community of bacteria but with a high amount of pheromone release, thus acting as a quourm.