Question: Question 1 A batch culture is utilised to grow a strain of yeast on a glucose substrate. The cell concentration (g/L) and glucose concentration was

Question 1 A batch culture is utilised to grow a strain of yeast on a glucose substrate. The cell concentration (g/L) and glucose concentration was measured, and data is shown in following table. 1.1 Determine the maximum net specific growth. (11) 1.2 Calculate the apparent growth yield, YX/S (3) 1.3 Calculate the mass doubling time. (3) [17] Question 2 A mixed culture of microorganism is used for the anaerobic degradation of benzoic acid by the following reaction: C6H5COOH+aO2+bNH3cC5H7NO2+dCO2+eH2O 2.1 Determine the coefficients (a to e) for RQ=0.8 2.2 Determine the biomass yield coefficient, YX/s and the oxygen yield coefficient, YX02 2.3 Calculate degree of reduction for the substrate and bacteria. (4)

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