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Created with Fabric.js 1.4.5 0 1 2 3 4 5 6 7 0 3 6 9 12 15 18 21 24 27 30 The Effects of Temperature on Cellular Respiration The Effects of Temperature on Cellular Respiration Change in Volume of Air Level (mL) Variables & Control Experimental Procedure Conclusion We hypothesize that cellular respiration will be faster in hotter temperatures because colder temperatures might chill the plant, causing the molecules within it to move more slowly. Analysis In this procedure, we used respirometers to measure the rate of photosynthesis in the peas.We created 3 water baths where one had hot water (30-29 degrees Celsius), one had cold water (15-16 degrees Celsius), and one had room temperature water (19 degrees Celsius). Then we placed a respirometer of germinating peas in each bath. After, we measured the amount of air in the respirometers every 3 minutes. The volume of the respirometer in hot water started at 10 mL and ended at 3.8 mL, for a net change of 6.2 mL. In cold water, the volume started at 6.8 mL and ended at 3.0 mL, for a net change of 3.8 mL. At room temperature (19 degrees Celsius), the net change was 5.2 mL, going from 7.9 mL to 2.7 mL. The hot water caused the most change, but there was fluctuation from 12 minutes to 21 minutes, where the volumewent back up, then began decreasing again. Hypothesis How does temperature affect the rate of cellularrespiration in plants? Question Time (min) Independent Variable: Water TemperatureDependent Variable: Rate of Cellular RespirationControl: Respirometer in Room Temperature Water double click to change this header text! Legend Room Temp WaterHot WaterCold Water Our data showed us that with the hotter temperature the rate of cellular respiration occurred quicker. Our hypothesis wascorrect because we saw a great increase of the rate of cellular respiration, especially in the hotter temperature. Our main source of error was that we had to keep adding hot water to our water bath to keep the temperature relatively hot. As a result, the volume of the water increased, then decreased, and this affected the accuracy of our data. Another source of error was that we did not use the respirometer in each of the water baths because there might have been changes that we assumed happened because of cellular respiration when they might have not, and there was no way for usto check that.
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