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Experiment to investigate what effects the rate of respiration in yeast
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| Submitted: Wed Aug 13 2003
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SC1 Experiment to investigate what effects the rate of respiration in yeast Aim To investigate the effect of temperature on the rate of respiration in yeast Glucose + Oxygen Carbon Dioxide + Energy + Water Introduction Respiration is catalysed by enzymes. Enzymes are proteins, the structure of which is affected by temperature. Most enzymes optimum temperature is 40 ºC. All matter is made of particles, which move around. When heat is present the particles move around faster, colliding into each other, so they respire more. The hotter the water, the more they move around and vice versa. Prediction I predict that the highest rate of respiration will be at 40 ºC. Above 40 ºC, the rate of respiration will decline; this is because enzymes start to break down. This is called denaturing. I also predict that the yeast will not respire at a temperature of below 15 ºC because the particles are not moving around enough. Apparatus Possible Variables *...
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