what are the differences between aerobic respiration and fermentation? What are the processes for both?
I did this lab in biology and i am soo lost. We took two bottles and put a balloon on both bottles with one bottle having water and sugar and the other bottle having water and yeast. What does this have anything to do with fermentation ?? im confused can someone helpp mee!??
One Response
Asst Prof
19 Feb 2010
Fermentation is the opposite of aerobic respiration; this is why fermentation is also called anaerobic respiration (respiration without oxygen). The balloon on top of the bottle with yeast in it inflated (or should have) because the yeast, having little oxygen available, metabolized the sugar anaerobically, producing CO2. (There was also a tiny amount of alcohol produced)
Of course, in the bottle without the yeast, nothing happened, because there were no organisms to break down the sugar.