GENERAL ANATOMY
ENDOCRINE SYSTEM
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Short distance signaling
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Cell communication inside the body
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Chemicals released into environment
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Single-celled bacteria secrete and detect autoinducers to respond to changes in community’s population/species
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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: -Individual bacteria use quorum sensing to detect and respond to changes in cell density as a coordinated group.
Detailed explanation-3: -Quorum sensing involves the production, release and group-wide detection of extracellular signalling molecules, which are called autoinducers. Autoinducers accumulate in the environment as bacterial population density increases.
Detailed explanation-4: -Quorum sensing is known to be responsible for the regulation of bioluminescence, cell competency and horizontal gene transfer, virulence, motility, the formation of biofilms and the production of antibiotics and other secondary metabolites [4, 5].
Detailed explanation-5: -Quorum sensing (QS) regulation allows bacteria to control their gene expression in response to their population density. The bacteria produce signaling molecules that accumulate during specific stages of growth, although their production level can also be influenced by the environment.