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TLS Online TPP Program

#Question id: 370

Which of the following statements is true about buffer solutions?

#SCPH01 Biochemistry

  1. They maintain a constant pH of 7.

  2. They maintain a constant pH when acids are added to them but not when bases are added to them.

  3. They fluctuate in pH when either acids or bases are added to them.

  4. They maintain a relatively constant pH when either acids or bases are added to them.

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TLS Online TPP Program

#Question id: 14277

#SCPH05 I Biotechnology

Lactobacillus casei is propagated under essentially anaerobic conditions to provide a starter culture for manufacture of Swiss cheese. The culture produces lactic acid as a by-product of energy metabolism. The system has the following characteristics:

                                                                 

 

A stirred fermenter is operated in fed-batch mode at quasisteady state with a feed flow rate of 4 m3 h-1 and feed substrate concentration of 80 kg m-3. After 6 h, the liquid volume is 40 m3. What mass of cells is produced after 6 h fed-batch operation?

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TLS Online TPP Program

#Question id: 14278

#SCPH05 I 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

#SCPH05 I 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

#SCPH05 I Biotechnology

Growth yield of mDicrobes is defined as
TLS Online TPP Program

#Question id: 14279

#SCPH05 I Biotechnology

Growth yield of mDicrobes is defined as
TLS Online TPP Program

#Question id: 14280

#SCPH05 I Biotechnology

In microbial cultivation, the expression for product synthesis