Question
Fermentation products of yeast are
H2O + CO2
Methyl alcohol + CO2
Methyl alcohol + water
Ethyl alcohol + CO2
Solution
D.
Ethyl alcohol + CO2
The yeast causes anaerobic respiration (fermentation). In the fermentation the pyruvate is broken down to form ethyl alcohol (C2H5OH), CO2 and NAD+. The ethyl alcohol is excreted.