7. (3 points) Consider the following standard free energies of hydrolysis: Glycerol 3-phosphate Glycerol + Pi ATP ADP +

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7 3 Points Consider The Following Standard Free Energies Of Hydrolysis Glycerol 3 Phosphate Glycerol Pi Atp Adp 1 (66.84 KiB) Viewed 12 times

7. (3 points) Consider the following standard free energies of hydrolysis: Glycerol 3-phosphate Glycerol + Pi ATP ADP + P Phosphocreatine ► Creatine + Pi AG* = -9.2 kJ/mol AG* = -30.5 kJ/mol AG = - 43.0 kJ/mol Which of the following reactions is thermodynamically favorable? (choose one answer) a. Glycerol 3-phosphate + ADP →glycerol + ATP b. Creatine + ATP phosphocreatine + ADP c. Glycerol 3-phosphate + creatine →glycerol + phosphocreatine d. None of the above 3. (3 points) Enzymes accelerate reactions because: (choose one answer) a. Enzymes lower the overall free energy of the reaction b. The functional groups in some amino acids can react with the substrate C. The active site of the enzyme is complementary to the transition state d. All of the above e. None of the above f. (b) and (c) (4 points) Calculate the standard free-energy change for the reduction of acetaldehyde by NADH form ethanol and NAD+ given the following half-reactions. F = 96.48 kJ/V (Choose one answer also show your work) Acetaldehyde + 2H+ + 2e → ethanol NAD + 2H+ + 2e → NADH + H+ E = -0.197 v E = -0.320 V - a. -23.7 kJ/mol b. 23.7 kJ/mol c. -99.8 kJ/mol d. 99.8 kJ/mol