... test I will only change one factor and keep all the other factors constant as it could effect my results. An example of an unfair test where more than one factor is changed is shown below. Prediction I predict that the enzymes optimum temperature is roughly about 40oC. I will explain this prediction in a bit more depth in the following diagram. 10 , 20 , 30 , 40 , 50 , 60 An enzyme is a biological catalyst, it has a specific shape which makes it unique. On an enzyme there is a reaction site, the reaction site is shown in diagram (1) The reaction site is where the enzyme reacts with another reactant (in this case, peroxide.) if the enzyme loses its special shape then it has denatured and is useless. A catalyst lowers the amount of energy needed to start a reaction, (as shown in diagram 2), catalysts are never changed in ...

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