A simple batch fermentation of an aerobic bacterium growing on methanol gave the results shown in figures below. Calculate the following Substrate concentration, 10 2000. 10 20 Time, days a) Specific growth rate at t=12 days b) Mass doubling time (ta) c) Maximum growth rate (max) d) Saturation constant (Ks) e) Yield coefficient on substrate (Yx/s) 30 64 20 Cell concentration, g/l Ln (Cell concentration) 3.5 2.5 0 5 10 15 20 25 Time, days 30