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.
Glycolysis requires no oxygen, and occurs whether oxygen is present or not. Glycolysis occurs in all living cells. Fermentation follows glycolysis in anaerobic conditions. Fermentation is not part of aerobic cellular respiration. Fermentation occurs in the cytoplasm.The purpose of fermentation is to prevent the accumulation of pyruvate, and to prevent the depletion of the NADox pool.There is more than one kind of fermentation.lycolysis requires no oxygen, and occurs whether oxygen is present or not. Glycolysis occurs in all living cells. Fermentation follows glycolysis in anaerobic conditions. Fermentation is not part of aerobic cellular respiration. Fermentation occurs in the cytoplasm.