Question

Differentiate between Aerobic respiration and fermentation.

Answer 1

	Aerobic respiration	Fermentation
1.	It takes place in higher organisms.	It takes place in both higher and lower organisms.
2.	It takes place in cytoplasm and mitochondria.	It takes place in cytoplasm.
3.	It involves the participation of free molecular oxygen.	It does not involve participation of free molecular oxygen.
4.	It involves many steps – glycolysis, link reaction, Krebs cycle and ETS.	It involves only glycolysis, decarboxylation and reduction. (alcoholic fermentation)
5.	Oxidation of food is complete.	Oxidation of food is incomplete.
6.	It produces CO2 and H2O.	It produces either ethanol or lactic acid and CO2 depending upon the type of fermentation.
7.	It releases more energy, i.e. 38 ATP.	It releases less energy, i.e. 2 ATP.