In an experiment plant RR round genotype have 100 seeds. In F1 generation 70 seeds are round and 30 seeds are wrinkled. So what will be

the penetrance value for round seeds?

TLS Online TPP Program

#Question id: 14216

#Section 5: Bioprocess Engineering and Process Biotechnology

The viscosity of fluid decreases with increasing stirrer speed, the fluid would be 

TLS Online TPP Program

#Question id: 14217

#Section 5: Bioprocess Engineering and Process Biotechnology

In a microbial system how true yields are related to apparent growth yield? 

TLS Online TPP Program

#Question id: 14218

#Section 5: Bioprocess Engineering and Process Biotechnology

In CSTR system at steady rate  

TLS Online TPP Program

#Question id: 14219

#Section 5: Bioprocess Engineering and Process Biotechnology

A waste-water stream of F = 1 m3 /h with substrate at 2000 mg/l is treated in an upflow packed bed containing immobilized bacteria in form of biofilm on small ceramic particles. The effluent substrate level is desired to be 30 mg/l. The rate of substrate removal is given by the following equation

                   

By using the following information, determine the required height of the column (H). k = 0.5 h-1, X = 10 g/l, Ks = 200 mg/l, L = 0.2 mm, α = 100 m2 /m3 , A = 4 m2 , η = 0.8

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TLS Online TPP Program

#Question id: 14220

#Section 5: Bioprocess Engineering and Process Biotechnology

A value of kLa = 30 h^-1 has been determined for a fermenter at its maximum practical agitator rotational speed and with air being sparged at 0.5 l gas/l reactor volume-min. E. coli with a qO2 of 10 mmol O2/g-dry wt-h are to be cultured. The critical dissolved oxygen concentration is 0.2 mg/l. The solubility of oxygen from air in the fermentation broth is 7.3 mg/l at 30⁰C.

What maximum concentration of E. coli can be sustained in this fermenter under aerobic conditions?

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?