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Aim The aim for this experiment is to investigate which sugars the yeast can respire. Hypothesis I think glucose and the yeast will work the best (produce the most Carbon Dioxide) and Arabinose and the yeast will not work as well as the other sugars with yeast (it will produce less Carbon Dioxide). This is because Glucose is an exact fit to the yeast enzyme (Carbohydrase), using the 'lock and key' mechanism. Because the Glucose molecule fits in the Carbohydrase exactly, it totally metabolises. Other sugar molecules, such as Galactose, which are similar to Glucose, may partially meatoblise as the substrate may partially fit into the yeast active site, however, it will not fully metabolise as it will not fully fit into the yeast active site. Equation Here is an equation for the fermentation process: Word equation Substrate + Enzyme -->Enzyme Substrate Complex --> Product + Enzyme Symbol Equation S + E --> ES --> P +...

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