TLS Online TPP Program

#Question id: 14608


In salting out precipitation method, protein precipitated out by?

#Section 5: Bioprocess Engineering and Process Biotechnology
  1. By increasing the solubility of proteins
  2. By lowering the solubility of proteins 
  3. By increasing ionic polyelectrolyte concentration
  4. none 
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TLS Online TPP Program

#Question id: 15494

#Section 4: Fundamentals of Biological Engineering

Assuming that cells convert two-thirds (w/w) of the substrate to biomass, the stoichiometric coefficient (1 only) for glucose utilisation for the following reaction is

TLS Online TPP Program

#Question id: 15495

#Section 4: Fundamentals of Biological Engineering

Calculate the degree of reduction for following substrates:
A) Methane
B) Glucose
C) Ethanol

TLS Online TPP Program

#Question id: 15496

#Section 4: Fundamentals of Biological Engineering

S. cerevisiae produces ethanol at a yield of 0.5 g/g glucose. The strain ferments 20g/l glucose in 24 hours. Calculate productivity of ethanol in this fermentation

TLS Online TPP Program

#Question id: 15497

#Section 4: Fundamentals of Biological Engineering

A. aceti converts alcohol to acetic acid according to the stoichiometric relation

C2H5OH + O2 🡪CH3COOH + H2O

In a vigorously agitated and aerated reactor containing 20 g/l ethanol, the organism produces 16 g/l acetic acid and 2 g/l was the residual ethanol concentration. What are the theoretical and observed yields of acetic acid expressed in g/g ethanol?

TLS Online TPP Program

#Question id: 15498

#Section 4: Fundamentals of Biological Engineering

The maximum yield for microbial conversion of Glucose (C6H12O6) to ethanol (C2H5OH) on a mol/mol basis is approximately:

TLS Online TPP Program

#Question id: 15499

#Section 4: Fundamentals of Biological Engineering

Growth yield coefficient of microbes is defined as