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An Investigation into how temperatures affect the activity of catalyse
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An Investigation into how temperatures affect the activity of catalyse Introduction Catalyse is a biological catalyst which can speed up the breakdown of hydrogen peroxide into water and oxygen. You can find the yeast, apples and especially liver catalyse is released in living cells because it is poisonous. Research (Background information- all information on pages 22 + 23 of The Living World) Preliminary Experiment (using 1cm of yeast) Amount of H202 Height of froth (cm) Average height of froth after 15 seconds (cm) Attempt 1 Attempt 2 0.5 1 1.4 1.2 1.0 3.5 3 3.25 1.5 6 5.5 5.75 2.0 6.3 6.4 6.35 2.5 7 7.2 7.1 3.0 9.5 9.4 9.45 Planning The range of temperatures I will use are 20?C, 30?C, 40?C, 50?C and 60?C Appropriate apparatus I will use: * 2 test tubes * Beaker * 2 measuring cylinders * Kettle * Goggles * Pipet * Thermometer * Stop-clock * Hydrogen peroxide * Yeast * Ruler (cm) Method First thing I will do is get 2cm of yeast and 1cm of hydrogen peroxide using a pipet and put the two solutions into two separate test tubes. Then I will boil a kettle and put the...
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