Question

5. The hydrolysis of Adenine Triphosphate, ATP, to adenine diphosphate, ADP, and phosphate, Pi, is an important biological reaction which is often coupled to non-spontaneous reactions to enable them to occur. Under standard conditions: ATP + H2O ? ADP + H+ + Pi ?rG°(298 K) = -30.5 kJ mol-1 Which of the following reactions CAN NOT be coupled to ATP hydrolysis to make them spontaneous (under standard conditions)? (A) Glucose + Pi ? Glucose-6-P + H2O ?rG°(298 K) = +13.8 kJ mol-1 (B) Glycerol + Pi ? Glycerol-3-P + H2O ?rG°(298 K) = +9.2 kJ mol-1 (C) Creatine + Pi ? Phosphocreatine + H2O ?rG°(298 K) = +43.0 kJ mol-1 (D) Fructose + Pi ? Fructose-6-P + H2O ?rG°(298 K) = +15.9 kJ mol-1

          5. The hydrolysis of Adenine Triphosphate, ATP, to adenine diphosphate, ADP, and phosphate, Pi, is an important biological reaction which is often coupled to non-spontaneous reactions to enable them to occur. Under standard conditions:
ATP + H2O ? ADP + H+ + Pi ?rG°(298 K) = -30.5 kJ mol-1
Which of the following reactions CAN NOT be coupled to ATP hydrolysis to make them spontaneous (under standard conditions)?
(A) Glucose + Pi ? Glucose-6-P + H2O ?rG°(298 K) = +13.8 kJ mol-1
(B) Glycerol + Pi ? Glycerol-3-P + H2O ?rG°(298 K) = +9.2 kJ mol-1
(C) Creatine + Pi ? Phosphocreatine + H2O ?rG°(298 K) = +43.0 kJ mol-1
(D) Fructose + Pi ? Fructose-6-P + H2O ?rG°(298 K) = +15.9 kJ mol-1

5. The hydrolysis of Adenine Triphosphate, ATP, to adenine diphosphate, ADP, and phosphate, Pi, is an important biological reaction which is often coupled to non-spontaneous reactions to enable them to occur. Under standard conditions:
ATP + H2O ? ADP + H+ + Pi ?rG°(298 K) = -30.5 kJ mol-1
Which of the following reactions CAN NOT be coupled to ATP hydrolysis to make them spontaneous (under standard conditions)?
(A) Glucose + Pi ? Glucose-6-P + H2O ?rG°(298 K) = +13.8 kJ mol-1
(B) Glycerol + Pi ? Glycerol-3-P + H2O ?rG°(298 K) = +9.2 kJ mol-1
(C) Creatine + Pi ? Phosphocreatine + H2O ?rG°(298 K) = +43.0 kJ mol-1
(D) Fructose + Pi ? Fructose-6-P + H2O ?rG°(298 K) = +15.9 kJ mol-1

Added by Lisa M.

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