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TLS Online TPP Program

#Question id: 28114

Which is the most frequently used impeller in the fermentation industry regarded as 6- flat-blade disc-mounted turbine?

#Section 5: Bioprocess Engineering and Process Biotechnology
  1. Propeller turbine
  2. Rushton turbine
  3. Bladeless turbine
  4. Screw turbine
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TLS Online TPP Program

#Question id: 3259

#Section 3: Genetics, Cellular and Molecular Biology

Different type of evolution leads to group of taxon in following three manners

A- group of taxon whose member have descended from common ancestor

B- when two lineages convergently  evolve similar character states form  groups that are recognized by pheneticists

c. taxon that include most recent ancestor but not all of its descendent
TLS Online TPP Program

#Question id: 15922

#Section 6: Plant, Animal and Microbial Biotechnology

Exposure to carcinogens is a contributing factor for _________
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: 15577

#Section 5: Bioprocess Engineering and Process Biotechnology

Calculate the overall order of a reaction which has rate expression:
Rate = k [A]1/2 [B]3/2
TLS Online TPP Program

#Question id: 396

#Section 4: Fundamentals of Biological Engineering

Identical heat lamps are arranged to shine on two identical containers, one containing water and one methanol (wood alcohol), so that each liquid absorbs the same amount of energy minute by minute. The covalent bonds of methanol molecules are nonpolar, so there are no hydrogen bonds among methanol molecules. Which of the following graphs correctly describes what will happen to the temperature of the water and the methanol?