A substrate is consumed in a zero order reaction such that the concentration falls from 40 g/l to 20 g/l in 4 h. How long will it take the substrate to fall from 20 g/l to 2 g/l:

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