TLS Online TPP Program

#Question id: 4135


In the “activation” of an amino acid for protein synthesis:

#Section 3: Genetics, Cellular and Molecular Biology
  1. leucine can be attached to tRNAPhe, by the aminoacyl-tRNA synthetase specific for leucine.

  2. methionine is first formylated, then attached to a specific tRNA.

  3. the amino acid is attached to the 5' end of the tRNA through a phosphodiester bond.

  4. there is at least one specific activating enzyme and one specific tRNA for each amino acid.

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TLS Online TPP Program

#Question id: 15472

#Section 4: Fundamentals of Biological Engineering

The mass of 1 kmol of oxygen molecules is

TLS Online TPP Program

#Question id: 15473

#Section 4: Fundamentals of Biological Engineering

How many kilograms of ethanol is produced from 1 kg of glucose in ethanol fermentation? 

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