TLS Online TPP Program

#Question id: 4352


How does extracellular glucose inhibit transcription of the lac operon?

#Part-A Aptitude & General Biotechnology
  1. by strengthening the binding of the repressor to the operator

  2. by weakening the binding of the repressor to the operator

  3. by inhibiting RNA polymerase from opening the strands of DNA to initiate transcription

  4. by reducing the levels of intracellular cAMP

More Questions
TLS Online TPP Program

#Question id: 14272

#Part-B Specialized Branches in Biotechnology

Penicillin is produced by P. chrysogenum in a fed-batch culture with the intermittent addition of glucose solution to the culture medium. The initial culture volume at quasi-steady state is V0 = 500 l, and glucose-containing nutrient solution is added with a flow rate of F = 50 l/h. Glucose concentration in the feed solution and initial cell concentration are S0 = 300 g/l and X0 = 20 g/l, respectively. The kinetic and yield coefficients of the organism are mm = 0.2 h-1 , KS = 0.5 g/l, and YX/S = 0.3 g dw/g glucose. If qP = 0.05 g product/g cells h and P0 = 0.1 g/l, determine the product concentration in the vessel at t = 10 h

TLS Online TPP Program

#Question id: 14278

#Part-B Specialized Branches in Biotechnology

Stirrer has a power number (Np) 10. If the stirrer speed (N) is 1s^-1, its diameter D=1m and the density of the medium is 1000 kg/m^3, the ungassed power input (P) in watts is 

TLS Online TPP Program

#Question id: 14278

#Part-A Aptitude & General Biotechnology

Stirrer has a power number (Np) 10. If the stirrer speed (N) is 1s^-1, its diameter D=1m and the density of the medium is 1000 kg/m^3, the ungassed power input (P) in watts is 

TLS Online TPP Program

#Question id: 14279

#Part-B Specialized Branches in Biotechnology

Growth yield of mDicrobes is defined as

TLS Online TPP Program

#Question id: 14279

#Part-A Aptitude & General Biotechnology

Growth yield of mDicrobes is defined as

TLS Online TPP Program

#Question id: 14280

#Part-B Specialized Branches in Biotechnology

In microbial cultivation, the expression for product synthesis