Limited correlations among complex I respiration rates of intact cells compared metabolizing glucose to their isolated mitochondria. Rotenone-sensitive, FCCP-uncoupled respiration in intact cybrid cells, normalized to cardiolipin content, is plotted on the x-axis against state 3 (ADP added), rotenone-sensitive respiration in their isolated mitochondria metabolizing glutamate/malate, also normalized to cardiolipin content.