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← Life Sciences & MedicineWhich mechanism explains how bacterial populations coordinate gene expression in response to increasing cell density?
A)Direct contact via pili formation
B)Nutrient depletion triggers sporulation
C)Quorum sensing via autoinducer molecules✓
D)Horizontal gene transfer transformation events
💡 Explanation
Quorum sensing enables bacteria to monitor their population density by releasing autoinducer molecules. As cell density increases, autoinducer concentration reaches a threshold, triggering coordinated gene expression because the autoinducer binds to receptors, influencing transcription, rather than other forms of genetic exchange.
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