TLS Online TPP Program

#Question id: 18214


Expressed sequence tags (ESTs) are

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology
  1. ESTs are short sequences obtained from cDNA clones
  2. Short fragments of DNA
  3. Short fragments of protein
  4. None of the above
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TLS Online TPP Program

#Question id: 15492

#Section 4: Fundamentals of Biological Engineering

Assume that experimental measurements for a certain organism have shown that cells can convert two-thirds (wt/wt) of the substrate carbon to biomass carbon. Calculate the stoichiometric coefficients for the following biological reactions:
 Hexadecane: C16H34 + aO2 + bNH3 c(C4.4H7.3N0.86O1.2) + dH2O + eCO2

TLS Online TPP Program

#Question id: 15493

#Section 4: Fundamentals of Biological Engineering

Assume that experimental measurements for a certain organism have shown that cells can convert two-thirds (wt/wt) of the substrate carbon to biomass carbon. Calculate the stoichiometric coefficients for the following biological reactions:

Glucose: C6H12O6 + aO2 + bNH3 c(C4.4H7.3N0.86O1.2) + dH2O + eCO2

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?