TLS Online TPP Program

#Question id: 347


A beaker contains 100 milliliters (mL) of NaOH solution at pH = 13. A technician carefully pours into the beaker 10 mL of HCl at pH = 1. Which of the following statements correctly describes the result of this mixing?

#Section 2: General Biology
  1. The concentration of Na+ ions will rise.

  2. The pH of the beaker's contents will increase.

  3. The pH of the beaker's contents will be neutral.

  4. The pH of the beaker's contents will decrease.

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TLS Online TPP Program

#Question id: 15491

#Section 4: Fundamentals of Biological Engineering

The respiratory coefficient for the reaction    is defined as
   

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