Batch cultures were grown in YPDX 6%/3% for 96 hours. Measurements are averages from three biological replicates. A. The average dry-cell weight biomass (g per L culture) measured at 6, 24, and 48 h post inoculation. Asterisk indicates a significant difference (p< 0.055) between the 24h and 48h time point within each strain. For all strains except Y184 and Y184 hog1Δ, the biomass accumulated was not significantly different at 48h compared to 24h, indicating faster saturation of those cultures. B. Specific glucose consumption rates calculated from the exponential phase of growth. C. Specific xylose consumption rate calculated from the stationary phase of growth. D. Ethanol titer at 48 hours post inoculation. For B,C,D, asterisks denote significant differences compared to Y184 (paired T-Test, p < 0.05).