Find out when teenagers need to file a tax return and how to file a tax return for a teenager. 2011 Income Requirements for Teenagers: For the 2011 tax year, which is filed in 2012, teenagers claimed as a dependent on your return must file their own taxes if they meet any of the following conditions: 1  Earned income is greater than $5,800. 2  Unearned income is greater than $950. 3  Self-employment net earnings are greater than $400.
Fermentation is a metabolic process that converts sugar to acids, gases, or alcohol. It occurs in yeast and bacteria, and also in oxygen-starved muscle cells, as in the case of lactic acid fermentation.
Alcoholic fermentation is the type of fermentation that occurs in yeast. Anaerobic respiration, namely alcoholic fermentation. This process is very similar to glycolysis, exce â¦ pt for the fact that alcoholic fermentation replaces one enzyme with two enzymes that change pyruvic acid into ethanol and carbon dioxide.actic Acid and Alcholic fermentation. Alcoholic fermentation is used in bread dough and yeasts in order to make them rise. Lactic Acid fermentation is found in body muscles, especially when you excersise. It helps to keep you breathing by transmitting oxygen when your oxygen levels are low.