TLS Online TPP Program

#Question id: 2017


Which of the following could prevent the appearance of the symptoms of an allergy attack?

#Section 2: General Biology
  1. blocking the attachment of the IgE antibodies to the mast cells

  2. blocking the antigenic determinants of the IgM antibodies

  3. reducing the number of helper T cells in the body

  4. reducing the number of cytotoxic cells

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TLS Online TPP Program

#Question id: 15474

#Section 4: Fundamentals of Biological Engineering

The overall reaction for microbial conversion of glucose to L-glutamic acid is:
C6H12O6 + NH3 + 3/2O2 C5H9NO4 + CO2 + 3H2O
(glucose)                            (glutamic acid)
What mass of oxygen is required to produce 15 g glutamic acid?

TLS Online TPP Program

#Question id: 15475

#Section 4: Fundamentals of Biological Engineering

Production of single-cell protein from hexadecane is described by the following reaction equation:
C16H34 + aO2 + bNH3 cCHl.66O0.27N0.20 + dCO 2 + eH2O
where CH 1.6600.27N0.20 represents the biomass. If RQ= 0.43, determine the stoichiometric coefficients.

TLS Online TPP Program

#Question id: 15476

#Section 6: Plant, Animal and Microbial Biotechnology

Industrial production of amino acids are done because they are used extensively in the 
1. flavor enhancers
2. Fabric
3. nutritional supplements
4. feed additives
5. medicine 
Choose the most appropriate option

TLS Online TPP Program

#Question id: 15477

#Section 6: Plant, Animal and Microbial Biotechnology

Why these metabolites are manufactured by microbial fermentation rather than chemical synthesis 

TLS Online TPP Program

#Question id: 15478

#Section 6: Plant, Animal and Microbial Biotechnology

Escherichia coli preferentially utilizes glucose by preventing the uptake of lactose and switching off transcription of the lac operon. This mechanism is known as 

TLS Online TPP Program

#Question id: 15479

#Section 6: Plant, Animal and Microbial Biotechnology

Out of the following what usually supports the fastest growth rate and is therefore considered the preferred nitrogen source for E. coli