what is special about yeast metabolism?

Answer 1

Yeast cells undergo both aerobic and anaerobic respiration. The fermentation of yeast has benefited mankind in the baking and brewing industries.

Normal yeast can grow either aerobically or anaerobically. Yeast, under aerobic conditions completely oxidize sugars to carbon dioxide and water. However, under anaerobic conditions, yeast can convert sugars only to carbon dioxide and ethanol, recovering less of the energy.

The tantalizing aroma of bread baking in the bakery is due to a process called fermentation of baker's yeast, or Saccharomyces cerevisiae. These organisms have long been utilized to ferment the sugars of rice, wheat, barley, and corn to produce alcoholic beverages and in the baking industry to expand, or raise, dough.

Answer 2

it's a nuisance.