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Experiment to Investigate Factors Affecting the Rate of Respiration in Yeast
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| Submitted: Thu Jul 11 2002
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Experiment to Investigate Factors Affecting the Rate of Respiration in Yeast Aim: To investigate the factors affecting the rate of respiration in yeast. Introduction: The keys to this investigation are 'enzymes'. Enzymes are how organisms respire. They work on a 'lock and key method', as illustrated below: We can see in the first diagram that the two parts, the enzyme and substrate (lock and key), fit together perfectly, at around 40?C. However, we can see that as the temperature of the environment is raised to 80?C the enzymes begin to 'denature', which means that the substrate will no longer fit into the enzyme. This means that the rate of respiration will be fairly low or even negligible, in comparison to the 40?C environment. This means that during my investigation I will have to be careful that I do not raise the temperature too high, otherwise the enzymes will denature and will not produce...
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