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The effect of temperature on insect respiration rates Aim: To determine how changing the surrounding temperature influences the rate of respiration of an insect, in this case a locust. Hypothesis: Increasing the temperature should raise the rate of respiration as it will increase enzyme activity and therefore cell metabolism. This in turn will cause the cells of the locust to use up oxygen more quickly increasing carbon dioxide levels in the cells whose detection will quicken the breathing rate, the observation of the inspiration of air will be used to determine the rate of respiration. As oxygen is used up, the locust notices this drop by the accumulation of lactic acid in its muscles. When oxygen is not present (anaerobic conditions) the first stage of respiration, glycolysis, and takes place readily but the link reaction in the matrix of the mitochondria is different from that in aerobic respiration. Instead of...

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