TLS Online TPP Program

#Question id: 2000


Which of the following is true of the successful development of a vaccine to be used against a pathogen?

#Section 2: General Biology
  1. It is dependent on the surface antigens of the pathogen not changing.

  2. It requires a rearrangement of the B cell receptor antibodies.

  3. It is not possible without knowing the structure of the surface antigens on the pathogen.

  4. It is dependent on the pathogen having only one epitope.

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TLS Online TPP Program

#Question id: 27590

#Section 5: Bioprocess Engineering and Process Biotechnology

The pressure gauge on an autoclave reads 15 psi. What is the absolute pressure in the chamber in atm? (Assume atmospheric pressure is 14.7 psi and 1 psi=6.8*10-2 atm

TLS Online TPP Program

#Question id: 27591

#Section 5: Bioprocess Engineering and Process Biotechnology

Gas leaving a fermenter at close to 1 atm pressure and 25°C has the following composition: 78.2% nitrogen, 19.2% oxygen, 2.6% carbon dioxide. Calculate the mass composition of the fermenter off-gas.

TLS Online TPP Program

#Question id: 27592

#Section 5: Bioprocess Engineering and Process Biotechnology

Gas leaving a fermenter at close to 1 atm pressure and 25°C has the following composition: 78.2% nitrogen, 19.2% oxygen, 2.6% carbon dioxide. Calculate the mass of CO2 in each cubic metre of gas leaving the fermenter. [R=0.000082057 m3 atm / K gmol]

TLS Online TPP Program

#Question id: 27593

#Section 5: Bioprocess Engineering and Process Biotechnology

The specific gravity of ethanol is 〖𝟎.𝟕𝟖𝟗〗_"4°C " ^"20°C"  . What is its density at 20°C in kg m-

TLS Online TPP Program

#Question id: 27594

#Section 5: Bioprocess Engineering and Process Biotechnology

In a process the inputs and outputs are shown as in the diagram.
Correct material balance is

TLS Online TPP Program

#Question id: 27595

#Section 5: Bioprocess Engineering and Process Biotechnology

In the given tank, there are two feeds and one output. Consider a 2 hour operation; the feed rates are 4000 kg/hr and 6000 kg/hr. The accumulated material inside the tank is 2000 kg. What is the output rate kg/hr of the material?