The table provides the standard reduction potential, E'º, for relevant half-cell reactions. Half-reaction Oxaloacetate² + 2H+ + 2e¯ malate²- Pyruvate + 2 H+ + 2e- → lactate Acetaldehyde + 2 H+ + 2e → ethanol → NAD+ + H+ + 2e--> NADH NADP+ + H+ + 2e- → NADPH Acetoacetate + 2H+ + 2e¯ B-hydroxybutyrate Malate + pyruvate → oxaloacetate + lactate Acetoacetate + NADH + H+ Pyruvate + NADH + H+ Acetaldehyde + succinate B-hydroxybutyrate + NAD+ Pyruvate + ß-hydroxybutyrate → lactate + acetoacetate Malate + NAD+ oxaloacetate + NADH + H+ → lactate + NAD+ E'° (V) ethanol + fumerate -0.166 -0.185 -0.197 Which of the reactions listed would proceed in the direction shown, under standard conditions, in the presence of the appropriate enzymes? -0.320 -0.324 -0.346

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The table provides the standard reduction potential, E'º, for relevant half-cell reactions.
Half-reaction
Oxaloacetate² + 2H+ + 2e¯ malate²-
→
Pyruvate + 2 H+ + 2e- → lactate
Acetaldehyde + 2H+ + 2e- → ethanol
NAD+ + H+ + 2e--> NADH
NADP+ + H+ + 2e- → NADPH
Acetoacetate + 2H+ + 2e¯
B-hydroxybutyrate
Malate + pyruvate →→ oxaloacetate + lactate
Acetoacetate + NADH + H* →→ ß-hydroxybutyrate + NAD+
Pyruvate + ß-hydroxybutyrate → lactate + acetoacetate
oxaloacetate + NADH + H+
Malate + NAD+
Pyruvate + NADH + H+
→ lactate + NAD+
Acetaldehyde + succinate
E'° (V)
ethanol + fumerate
-0.166
-0.185
-0.197
-0.320
-0.324
Which of the reactions listed would proceed in the direction shown, under standard conditions, in the presence of the
appropriate enzymes?
-0.346
Transcribed Image Text:The table provides the standard reduction potential, E'º, for relevant half-cell reactions. Half-reaction Oxaloacetate² + 2H+ + 2e¯ malate²- → Pyruvate + 2 H+ + 2e- → lactate Acetaldehyde + 2H+ + 2e- → ethanol NAD+ + H+ + 2e--> NADH NADP+ + H+ + 2e- → NADPH Acetoacetate + 2H+ + 2e¯ B-hydroxybutyrate Malate + pyruvate →→ oxaloacetate + lactate Acetoacetate + NADH + H* →→ ß-hydroxybutyrate + NAD+ Pyruvate + ß-hydroxybutyrate → lactate + acetoacetate oxaloacetate + NADH + H+ Malate + NAD+ Pyruvate + NADH + H+ → lactate + NAD+ Acetaldehyde + succinate E'° (V) ethanol + fumerate -0.166 -0.185 -0.197 -0.320 -0.324 Which of the reactions listed would proceed in the direction shown, under standard conditions, in the presence of the appropriate enzymes? -0.346
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