Ionophores are compounds that allow specific ions to freely cross a membrane. Using a series of ionophores that alter the pH gradient or the membrane potential, you make several observations. Are each of the four observations below consistent with the proposed model (that is, that flagellar motion is driven by an influx of protons through the flagellar motor)? Why or why not? Note that in these experimental conditions, the [K+] inside the bacterial cells is lower than the [K+] that is present in the growth medium outside the cells.
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