Question: what are the two types of fermentation and how are they different?
Answer: The two most common types of fermentation are (1) alcoholic fermentation and (2) lactic acid fermentation. (1) Alcoholic fermentation : the type of fermentation in which ethyl alcohol is the main end product . ... Lactic acid bacteria can ferment milk sugar lactose (C12H22O11) to lactic acid. The process is extracellular.