How does the amount of carbon dioxide correlate with the rat

How does the amount of carbon dioxide correlate with the rate of sugar consumed by yeast?

Solution

Yeast consumes sugar (glucose) to generate carbon dioxide and water to produce energy. Yeast

can metabolize sugar in two ways, aerobically, with the aid of oxygen, or anaerobically, without

oxygen.

In aerobic respiration, each molecule of sugar gives six molecules of carbon dioxide.

C₆H_l2O₆ + 6 O₂ gives 6 H₂O + 6 CO₂ + energy

In anaerobic respiration, each molecule of sugar gives two molecules of carbon dioxide.

C₆H_l2O₆ gives 2 CH₃CH₂OH + 2 CO₂ + energy

So, amount of CO₂ generated is proportional to amount of sugar consumed. It holds true for both aerobic and anerobic utilization