... are specific, this means that each enzyme catalyses a certain chemical reaction. An enzyme has an active site, which has a unique shape into which only a substrate of same unique shape can be fit. When this substrate fits into the active site it forms products. Enzymes can be denatured at certain conditions: Temperature: The rise temperature increases the rate of most chemical reaction; a fall in temperature slows them down. Mostly a rises of 10 oC will double the rate of reaction, but above 50 oC the enzyme being proteins are denature and stop working. PH: acid or alkaline conditions alter the chemical properties of proteins, including enzymes. The enzymes work bet at a particular level of acidity or alkalinity (PH). So we can say that each enzyme has got its own optimum PH. Hydrogen Peroxide: H2O2 is one of the most powerful oxidizers known. H2O2 can be converted into ...

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