Lactic acid fermentation is the conversion of sugars to lactic acid. The fermentation of glucose to lactic acid is C6H12O6 --> 2CH3CH(OH)CO2HAlcoholic fermentation is the oxidation of sugars to produce ethanol and CO2. This is used to produce beer and wine. The fermentation of glucose to ethanol and CO2 is C6H12O6 --> 2CH3CH2OH + 2CO2Anaerobic respiration is the breakdown of energy rich molecules without sufficient quantities of oxygen present. In human muscles, it is the same equation-wise as lactic acid fermentation, which is C6H12O6 --> 2CH3CH(OH)CO2H. Lactic acid requires oxygen to break it down further.