Biochemistry Science Fair Project
Factors affecting catalases and their effects on the body


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Project Information
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: www.virtualsciencefair.org...
Background

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 Creative Commons Attribution-ShareAlike License)

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