TLS Online TPP Program

#Question id: 542


Hamsters love to run on exercise wheels. Prolonged running at a high rate of speed requires ATP. Could a hamster with a defective gene for the enzyme lactate dehydrogenase meet the extra ATP demand for prolonged, fast wheel-running by maintaining a high rate of glycolysis? Why or why not?

#Section 4: Fundamentals of Biological Engineering
  1. No, not enough NAD+ can be regenerated for glycolysis to continue at a high rate.

  2. No, the defective gene will cause a rapid decline in pH in the muscles used for running.

  3. Yes, the defective enzyme has no effect on the glycolytic pathway.

  4. Yes, the enzyme alcohol dehydrogenase will supply the needed NAD+ if the lactose dehydrogenase cannot.

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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?

TLS Online TPP Program

#Question id: 24080

#Section 5: Bioprocess Engineering and Process Biotechnology

HI dissociates to form I2 and H2:
2HI(g) →H2(g) + I2(g)
If the concentration of HI changes at a rate of –0.45 M/s, what is the rate of appearance of I2(g)?