Problem description:
Does yeast break down starch into alcohol through anaerobic respiration under anaerobic conditions? How does yeast decompose? Is it like bees swallowing starch to make alcohol? Assuming that plants can produce alcohol through anaerobic respiration, can't they produce alcohol without yeast? Is yeast used as biocatalyst?
Analysis:
be
C6H 12O6 (glucose) _ _ _ (enzyme) 2C2H5OH (alcohol) +2 CO2+ energy
Instead of swallowing starch like bees to make alcohol, it catalyzes.
Putting yeast helps mass production (producing alcohol by yourself is too slow)
Yeast can be regarded as a biocatalyst.