TLS Online TPP Program

#Question id: 361


Calculate the percentage of histidine that has its imidazole side chain protonated at pH 7.3. The pKa values for histidine are pK1 = 1.8, pK2 (imidazole) = 6.0, and pK3 = 9.2.

#Section 4: Fundamentals of Biological Engineering
  1. 90%

  2. 95.2%

  3. 89.4%

  4. 5%

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TLS Online TPP Program

#Question id: 24074

#Section 5: Bioprocess Engineering and Process Biotechnology

For the reaction 2A + 3B → 4C + 5D, the rate of the reaction in terms of ΔB would be written as

TLS Online TPP Program

#Question id: 24075

#Section 5: Bioprocess Engineering and Process Biotechnology

In the combustion of methane, CH4(g) + 2 O2(g) → CO2(g) + 2H2O (g), which reactant has the greatest rate of disappearance?

TLS Online TPP Program

#Question id: 24076

#Section 5: Bioprocess Engineering and Process Biotechnology

Which of the following is not a possible graph of concentration versus time for a reactant?

TLS Online TPP Program

#Question id: 24077

#Section 5: Bioprocess Engineering and Process Biotechnology

The following graph shows the kinetics curves for the reaction of oxygen with hydrogen to form water:
O2(g) + 2H2(g) → 2H2O(g). Which curve is hydrogen?

TLS Online TPP Program

#Question id: 24078

#Section 5: Bioprocess Engineering and Process Biotechnology

A scientist conducts an experiment to determine the rate of the following reaction:
N2(g) + O2(g) → 2NO(g)
If the initial concentration of N2 was 0.500 M and the concentration of N2 was 0.450 M after 0.100 s, what is the rate of the reaction?

TLS Online TPP Program

#Question id: 24079

#Section 5: Bioprocess Engineering and Process Biotechnology

A scientist conducts an experiment to determine the rate of NO formation in the reaction:
N2(g) + O2(g) → 2NO(g)
If the initial concentration of N2 was 0.500 M and the concentration of N2 was 0.450 M after 0.100 s, what is the rate of NO formation?