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Biology coursework Investigation of temperatures' effects on the breakdown of hydrogen peroxide by catalase Planning 1) Prediction When catalase from potato is placed in water with pepsin, at a higher temperature, the rate at which the catalase breaks down hydrogen peroxide will increase. I predict that the enzyme will become denatured after it has reached its optimum point, and therefore will work at a slower rate after reaching 35-45oC. The reason for this prediction is because every enzyme has a temperature range of optimum activity. Outside that temperature range the enzyme is rendered inactive. This occurs because as the temperature changes enough energy is supplied to break some of the molecular bonds. When these forces are disturbed and changed the active site becomes altered in its ability to accommodate the substrate molecules it was intended to catalyse. 2) Background knowledge. a. Specificity, the lock and key hypothesis Enzymes are specific they will only act on...

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