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How does temperature affect the rate of reaction between yeast and hydrogen peroxide?

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How does temperature affect the rate of Reaction between yeast and Hydrogen peroxide? Introduction: In this investigation I am going to investigate the reaction between hydrogen peroxide (H2O2) And yeast (). In all living cells they all contain an enzyme called Catalase. In this investigation this breaks down hydrogen peroxide into water and oxygen. 2H2O22 Catalase 2H2O+O2 This investigation will be about how the reaction is affected by different temperatures. Factors: All of these factors could affect my investigation results these are: * Temperature * Concentration of the hydrogen peroxide. ...read more.


Though if the chemicals get too hot then this will denature (make the enzymes change shape) and there will be no reaction between the hydrochloric acid and the yeast. The more enzyme molecules, the faster the reaction will proceed provided there are enough substrate molecules provided. The temperature that I think will have the biggest reaction will be around 43 . How I think the results will turn out like. * A = The molecules have more energy so therefore they move around more and have more collisions the more of a chance there is to for a reaction to take place. ...read more.


For a reaction to take place there has to be a collision. In the experiment the substrate (hydrogen peroxide) fits into the enzyme (yeast) and the enzyme breaks up the substrate into smaller molecules. This is called the lock and key theory. This process is called a catabolic reaction this means a break down in reaction. A rise in temperature of most chemical reactions. In many cases a rise of 10 C will double the rate of reaction in a cell. Above 50 C the enzymes start to denature (loose their shape) and eventually stop working. Only one type of enzyme can work with one Substrate because of the lock and key theory. ...read more.

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