Sapling Learning In yeast, ethanol is produced from glucose under anaerobic cond

Question

Sapling Learning In yeast, ethanol is produced from glucose under anaerobic conditions. is maximum amount of ethanol in millimoles) that could theoretically be produced under the following conditions? A cell-free yeast extract is placed in a solution that contains 2.50 x102 mmol glucose, 0.40 mmol ADP, 0.40 mmol Pi, 0.80 mmol ATP, 0.20 mmol NAD and 0.20 mmol NADH. It is kept under anaerobic conditions. Number mmol Under the same conditions, what is the theoretical minimum amount of glucose (in millimoles) required in the solution to form the maximum amount of ethanol? Number mmol oPrevious Give Up & view solution Check Answer 0 Next

Explanation / Answer

C6H12O6 + 2 ADP + 2 Pi ---> 2 C2H5OH + 2 ATP + 2 CO2

1                  2            2

250      0.40     0.40

limiting reagent is ADP and Pi

so moles of ethanol formed = 0.40 mmol ---------------> answer 1

0.40 mol ethanol formed from 1 mol glucose

2 moles ethanol glucose = 0.40 / 2 = 0.20

minimum amount of glucose = 0.20mmol ---------------------> answer 2

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