"Decision"-making in bacteria: chemotactic response of Escherichia coli to conflicting stimuli.
Motile bacteria presented simultaneously with both attractant and repellent respond to whichever one is present in the more effective concentration. Apparently bacteria have a processing mechanism that compares opposing signals from the chemoreceptors for positive and negative taxis, sums these signals up, and then communicates the sum to the flagella.
D001224:Aspartic Acid; D002633:Chemotaxis; D004305:Dose-Response Relationship, Drug; D004926:Escherichia coli / Q000502:physiology*; D005407:Flagella / Q000502:physiology; D008564:Membrane Potentials; D009994:Osmolar Concentration; D012399:Rotation; D014633:Valine
D001224:Aspartic Acid; D014633:Valine