Glycolysis And Fermentation Of Yeast

2549 WordsMar 22, 201511 Pages
Glycolysis and Fermentation in Yeast Mahshad Fallah Spring 2015 ABSTRACT: The purpose of the testing and experiments conducted was to understand how the glycolysis in cell respiration works, to understand how the process of fermentation in yeast works and see the difference between fermentation and respiration in the yeast. Yeast is something that may not be alive, but when it is put in water with sugar, the yeast will take up the sugar and use the energy stored in the sugar molecules and carries out the processes of life. Living organisms are all similar in that they can take energy from their environments. Glycolysis is the first stage of cellular respiration that constitutes the most carbohydrate catabolism which means breaking down larger molecules into smaller types. The whole point of glycolysis is really to produce energy for the cell; therefore the first step of respiration is glycolysis. Glycolysis breaks down glucose and forms pyruvate with the production of two molecules of ATP. If oxygen is present than pyruvate cannot be used in anaerobic respiration, so glycolysis only occurs under aerobic conditions. Aerobic respiration requires the presence of oxygen while anaerobic respiration or fermentation does not. The product of fermentation process is CO2 and ethanol from pyruvate. Fermentation is how alcohol is made as ethanol is the drinking alcohol. In the lab; the very first experiment was to observe and understand the reaction from glycolysis
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