When the antibiotic valinomycin is added to actively respiring mitchondria, several things happen: the yield of atp decreases, the rate of o2 consumption increases, heat is released, and the proton gradient across the inner mitochondrial membrane decreases. what type of inhibitor is valinomycin? uncouplerinhibitor of atp synthaseinhibitor of the etceither an inhibitor of atp synthase or the etc