Q. The term “Quorum Sensing,” recently seen in scientific discussions, refers to:

[A] Regulation of plant growth based on sunlight

[B] A technique for modifying plant DNA

[C] A method of vaccine delivery using microbes

[D] Regulation of bacterial gene expression based on population density through signal molecules

Answer: D
Notes:

Explanation: Quorum sensing is a process by which bacteria communicate through chemical signal molecules (autoinducers) to detect population density and coordinate collective behaviors such as biofilm formation and virulence factor production.

Source- TH

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