AP BIOLOGY

Detailed explanation-1: -Quorum sensing is the regulation of gene expression in response to fluctuations in cell-population density. Quorum sensing bacteria produce and release chemical signal molecules called autoinducers that increase in concentration as a function of cell density.

Detailed explanation-2: -Bacteria use quorum sensing to coordinate certain behaviors based on the local density of the bacterial population. Bacteria that use quorum sensing constitutively produce and secrete certain signaling molecules (called autoinducers or pheromones).

Detailed explanation-3: -Quorum sensing is a process of cell–cell communication that allows bacteria to share information about cell density and adjust gene expression accordingly.

Detailed explanation-4: -Bacteria talk to each other using N-acylhomoserine lactones (AHLs) as quorum sensing (QS) signals. This signaling allows the bacteria to control gene expression of virulence factors and biofilms once a critical density has been achieved. This phenomenon, quorum sensing, is important when an infection propagates.

Detailed explanation-5: -In biology, quorum sensing or quorum signalling (QS) is the ability to detect and respond to cell population density by gene regulation. As one example, QS enables bacteria to restrict the expression of specific genes to the high cell densities at which the resulting phenotypes will be most beneficial.