Definition of tae kwon do for English Language Learners. : a style of fighting that originated in Korea and that uses kicks and punches but no weapons. Britannica.com: Encyclopedia article about tae kwon do.
It is also used in the baking process as a leavening agent; yeast releasing gas into their environment results in the spongy-like texture of breads and cakes. Because of its role in fermentation, humans have known about and used Saccharomyces cerevisiae for a long time.
Alcohol fermentation is pretty similar to lactic acid fermentation. Instead of the pyruvate being reduced to lactate, it is reduced to ethanol, and lets off two molecules of CO 2 along the way. Two kinds of organisms use alcohol fermentation: bacteria and yeast (yeast are fungi, btw).Humans use alcohol fermentation in another way, by using it to make bread, beer and wine. We'll talk more about that in another section.lcohol fermentation is pretty similar to lactic acid fermentation. Instead of the pyruvate being reduced to lactate, it is reduced to ethanol, and lets off two molecules of CO 2 along the way. Two kinds of organisms use alcohol fermentation: bacteria and yeast (yeast are fungi, btw).