Fig. 2

Glucose consumption by S. cerevisiae during fermentation of medium without addition of benzoquinones (reference fermentation) (filled triangle) and with additions of a 0.02 g/l BQ (filled diamond), 0.20 g/l BQ (unfilled diamond), 1.00 g/l BQ (unfilled triangle), 0.02 g/l DMBQ (unfilled circle), 0.20 g/l DMBQ (filled crossmark), and 1.00 g/l DMBQ (filled square), and b 2 mg/l BQ (filled circle), 5 mg/l BQ (filled square), 10 mg/l BQ (filled crossmark), 15 mg/l BQ (unfilled circle), and 20 mg/l BQ (filled diamond). The gray error bars indicate the standard deviations of glucose measurements in replicate fermentations