Glycolysis | Fermentation |
In glycolysis, glucose is converted into pyruvate. | During fermentation, pyruvate is converted to alcohol or lactic acid. |
It takes place with or without the presence of oxygen. | It takes place in presence of oxygen. |
It results in a net gain of 2 ATP. | No ATP is produced. |
The pyruvate enters the citric acid cycle. | The pyruvate is converted into ethanol or lactic acid and NAD+ is regenerated. |