The empirical formula for biomass of an unknown organism is CH_1.8O_0.5N_0.2. To grow this organism, ethanol (C2H5OH) and ammonia are used as carbon and nitrogen

sources, respectively. Assume no product formation other than biomass. To produce 1 mol of biomass from 1 mol of ethanol, the number of moles of oxygen required will be

TLS Online TPP Program

#Question id: 426

#Section 4: Fundamentals of Biological Engineering

Which statement is not true about catabolic pathways?

TLS Online TPP Program

#Question id: 14221

#Section 5: Bioprocess Engineering and Process Biotechnology

E. coli have a maximum respiration rate, qO2max, of about 240-mg O2/g-dry wt-h. It is desired to achieve a cell mass of 20 g dry wt/l. The kLa is 120 h-1 in a 1000-l reactor (800 l working volume). A gas stream enriched in oxygen is used (i.e., 80% O2) which gives a value of C* = 28 mg/L. If oxygen becomes limiting, growth and respiration slow; for example,

                                     

   where CL is the dissolved oxygen concentration in the fermenter. What is CL when the cell mass is  at 20 g/l?

TLS Online TPP Program

#Question id: 14189

#Section 5: Bioprocess Engineering and Process Biotechnology

Aerobic degradation of an organic compound by a mixed culture of organisms in waste water can be represented by the following reaction

               

Determine the degree of reductions for bacteria.

         __________________

TLS Online TPP Program

#Question id: 14416

#Section 2: General Biology

Bacteriostatic and Bactericidal functions can be achieved by

TLS Online TPP Program

#Question id: 3529

#Section 3: Genetics, Cellular and Molecular Biology

Mendel crossed tall and round seeded pea plants with dwarf and wrinkle seeded pea. The F1 plants were all tall and round seed. What is the probability of tall plant with wrinkle seed in F2 generation?