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Title: Factors (temperature, pH, enzyme oncentration) affecting catalases and their effects on the body
Subject: Biochemistry Grade level: High School - Grades 10-12 Academic Level: Ordinary Project Type: Experimental Cost: Low Awards: Second Place, Canada Wide Virtual Science Fair (2006) Affiliation: Canada Wide Virtual Science Fair Description: The purpose of this experiment is to find out how different temperatures, pH and the different concentrations of the substrate and of the enzyme affect the activities of the enzyme catalase. Link: http://www.virtualsciencefair.org/2006/cheu6j2/ |
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Catalase is a common enzyme found in nearly all living organisms, where it functions to catalyze the decomposition of hydrogen peroxide to water and oxygen. Catalase has one of the highest turnover numbers of all enzymes; one molecule of catalase can convert millions of molecules of hydrogen peroxide to water and oxygen per second. Catalase is a tetramer of four polypeptide chains, each over 500 amino acids long. It contains four porphyrin heme (iron) groups that allow the enzyme to react with the hydrogen peroxide. The optimum pH for catalase is approximately 7, while the optimum temperature varies by species. For More Information: Catalase K-12 Experiments & Background Information Source: Wikipedia (All text is available under the terms of the GNU Free Documentation License) |
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