Salma Ahmed
English Lit. GCSE Student
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How does a change in temperature effect the activity of the catalase enzyme on a piece of liver?
- Words:
- 2554
- Submitted:
- Thu Jul 11 2002
Have a little read: ... BIOLOGY COURSEWORK INVESTIGATION How does a change in temperature effect the activity of the catalase enzyme on a piece of liver? PLANNING Background knowledge An enzyme is a biological catalyst; it alters the rate of reaction without being changed itself. Enzymes are proteins; they have a very precise three- dimensional shape, which forms a one specific active site on the enzyme. Each enzyme can only convert one kind of substrate molecule into one kind of product molecule. What affects Enzymes? - Temperature - Enzymes start to denature if the temperature rises above 37.5 C Increasing the temperature alters the three - dimensional shape of the enzyme therefore the enzyme can no longer fit the substrate - pH - Enzymes work best in neutral conditions neither acidic or alkaline. What effect does catalase have? Catalase is a very fast reacting enzyme, it is found in many living cells, it breaks down hydrogen peroxide to water and produces oxygen. In fact
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