1) Binding of the Autoinducer 
2) Gene Expression
3) Increase in Signaling Molecule Production 

Quorum sensing is how different cell species in biofilms can communicate with one another, specifically about cell density. This is an essential response to environmental stimuli facilitated by autoinducers. 

Quorum Sensing

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Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.

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Autoinducers are molecules that are small enough to diffuse through cell membranes, that initiate gene activation for functions necessary for cell populations that have reached a critical density. 

Autoinducers

Steps of Quorum Sensing

Signaling molecules exist in two categories: Gram-negative bacteria utilizing N-acylated homoserine lactones, or Gram-positive utilizing mostly small peptides. 

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