TLS Online TPP Program

#Question id: 18759


What is the name of the site where Cre enzyme acts?

#Part-A Aptitude & General Biotechnology
  1. COX
  2.  LOX
  3. AOX
  4. XOP
More Questions
TLS Online TPP Program

#Question id: 14283

#Part-B Specialized Branches in Biotechnology

Aeration ina fermenter is expressed as VVM. What will be the VVM if air is sparged at 2000 L/min with a working volume 10 m^3? 

TLS Online TPP Program

#Question id: 14283

#Part-A Aptitude & General Biotechnology

Aeration ina fermenter is expressed as VVM. What will be the VVM if air is sparged at 2000 L/min with a working volume 10 m^3? 

TLS Online TPP Program

#Question id: 14318

#Part-B Specialized Branches in Biotechnology

system for manufacture of single-cell protein is Methylophilus methylotrophus. This organism is produced aerobically from methanol with ammonia as nitrogen source. The molecular formula for the biomass is CH 1.6800.36N0.22; these cells contain 6% ash. If the actual yield of biomass from methanol is 42% the thermodynamic maximum, what is the oxygen demand?

TLS Online TPP Program

#Question id: 14331

#Part-B Specialized Branches in Biotechnology

To ensure turbulent conditions and minimum mixing time during agitation with a turbine impeller, the Reynolds number must be at least 104. A stirred laboratory-scale fermenter with a turbine impeller 5 cm in diameter is operated at 800 rpm. If the density of broth being stirred is close to that of water, what is the upper limit for viscosity of the suspension if adequate mixing is to be maintained?

TLS Online TPP Program

#Question id: 14332

#Part-B Specialized Branches in Biotechnology

To ensure turbulent conditions and minimum mixing time during agitation with a turbine impeller, the Reynolds number must be at least 104. A stirred laboratory-scale fermenter with a turbine impeller 5 cm in diameter is operated at 800 rpm. If the density of broth being stirred is close to that of water. The mixing system is scaled up so the tank and impeller are 15 times the diameter of the laboratory equipment. The stirrer in the large vessel is operated so that the stirrer tip speed (tip speed = π N i D i) is the same as in the laboratory apparatus. How does scale-up affect the maximum viscosity. 

TLS Online TPP Program

#Question id: 14333

#Part-B Specialized Branches in Biotechnology

A cylindrical bioreactor of diameter 3 m has four baffles. A Rushton turbine mounted in the reactor has a diameter one third the tank diameter and is operated at a speed of 90 rpm. The density of the fluid is approximately I g cm-3. The reactor is used to culture an anaerobic organism that does not require gas sparging. The broth can be assumed Newtonian. As the cells grow, the viscosity of the broth increases. when the viscosity is 1000 times greater than water, estimate the power required to achieve turbulence.