TLS Online TPP Program

#Question id: 29009


vitamin D and PTH appear to stimulate production of mature osteoclasts through the dual action ____

#Unit 7. System Physiology – Animal
  1. Inhibits phosphate reabsorption and Stimulates Ca2+ reabsorption
  2. Stimulates phosphate reabsorption and Inhibits Ca2+ reabsorption
  3. Stimulating RANKL formation and inhibiting OPG production
  4. decreasing RANKL production  and increasing formation of OPG
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TLS Online TPP Program

#Question id: 26739

#Unit 12. Biochemical Engineering

A student decided to perform liquid-liquid extraction of solute A and solute B separately. Based on the table below, indicate which of the following options is CORRECT about their partition coefficient (K)?

 

Solute A

Solute B

Concentration of solute in extract (g/L)

50

 1

Concentration of solute in raffinate (g/L)

1

50

TLS Online TPP Program

#Question id: 23284

#Unit 12. Biochemical Engineering

A diafiltration process is used to remove salts from a protein solution of 1L. After 1L of make-up buffer (without salts) has been added to this system, the residual salt concentration would be of the original.

TLS Online TPP Program

#Question id: 24063

#Unit 12. Biochemical Engineering

Which one of the following cell separation techniques allows cells (tom different stages of the cell rule to be separated simultaneously with. minimal perturbation to their physiology ? 

TLS Online TPP Program

#Question id: 21408

#Unit 12. Biochemical Engineering

In a fed batch process with a nongrowth product formation kinetics given by qp = β (a constant), in order to maximize product concentration and enhance metabolic flux towards product formation,

TLS Online TPP Program

#Question id: 21413

#Unit 12. Biochemical Engineering

Aqueous two phase partitioning (ATPS) is used for the recovery of an enzyme from the cell free culture filtrate on addition of PEG2000 and dextran. The mixture separates into two phases with a partition coefficient for the enzyme = 4.2. The maximum possible enzyme recovery, when the volume ratio of the upper to lower phases is 5.0 will be:

TLS Online TPP Program

#Question id: 21741

#Unit 12. Biochemical Engineering

In large scale fermentation processes, corn steep liquor is mainly used as a