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TLS Online TPP Program

#Question id: 648

Enzyme catalysis is regulated by a number of mechanisms. Also, the flux through metabolic pathways must be regulated. Given the metabolic pathway below, which choice accurately describes the regulation of compound G levels?

#Section 2: General Biology

  1. G is regulated by chemical modification of the enzyme that catalyzes step 3.

  2. G serves as an inhibitory effector of the allosteric enzyme that catalyzes step 3.

  3. G inhibits the expression of the enzyme that catalyzes the formation of D.

  4. The reversible reaction of B to D is converted to an irreversible reaction.

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TLS Online TPP Program

#Question id: 406

#Section 4: Fundamentals of Biological Engineering

Hydrolysis of 1 M glucose 6-phosphate catalyzed by glucose 6-phosphatase is 99% complete at equilibrium (i.e., only 1% of the substrate remains). Which of the following statements is most nearly correct? (R = 8.315 J/mol·K; T = 298 K)
TLS Online TPP Program

#Question id: 407

#Section 2: General Biology

The reaction A + B -> C has a DG'° of –20 kJ/mol at 25° C.  Starting under standard conditions, one can predict that:
TLS Online TPP Program

#Question id: 407

#Section 4: Fundamentals of Biological Engineering

The reaction A + B -> C has a DG'° of –20 kJ/mol at 25° C.  Starting under standard conditions, one can predict that:
TLS Online TPP Program

#Question id: 408

#Section 2: General Biology

Which of the following compounds has the largest negative value for the standard free-energy change (DG'°) upon hydrolysis?
TLS Online TPP Program

#Question id: 408

#Section 4: Fundamentals of Biological Engineering

Which of the following compounds has the largest negative value for the standard free-energy change (DG'°) upon hydrolysis?
TLS Online TPP Program

#Question id: 409

#Section 2: General Biology

For the following reaction,DG'° = +29.7 kJ/mol. L-Malate + NAD+ -> oxaloacetate + NADH + H+ The reaction as written: