aerobic respiration - Guppy Large Guppy Fish Volume (ml)...

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Joshua Sipe Biology104 SectionM01 March 4, 2008 Title : Carbon Dioxide Production During Aerobic Respiration Abstract: The objective of this lab was to measure the amount of carbon dioxide produced as a result of aerobic respiration. Guppies were used as the cellular respirator which would change the pH of water over time. Each guppy was placed in 20ml of for 30 minutes allowing the guppy to change the pH of the water. After testing the pH it was determined that a larger guppy requires more dissolved oxygen then smaller guppies which proves larger guppies have a higher rate of respiration. Hypothesis: The larger guppy will produce more CO2 changing the PH more than the smaller guppy as a result of aerobic respiration. Procedure : The basis for this experimental procedure is outlined in Lab Manual Biol104 (Morris,TC3,2008) pgs. 61-61. The only changes to procedure was the volume of water used in the larger guppy experiment. Data: Figure. 1 Relationship of Guppy Size to Respiratory Rate Small
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Unformatted text preview: Guppy Large Guppy Fish Volume (ml) .1ml 1ml Water Volume (ml) 20ml 21ml Initial pH 8.75 8.55 Final pH 8.59 7.73 MicroMole .023 .254 Time (minute) 30 30 Respiratory Rate .1530 .1778 The data shows that the smaller guppy weighing .1ml has a respiratory rate of .1530 while the larger guppy weighing 1ml has a respiratory rate of .1778. Although water volume differs from the larger to smaller guppy beakers once put into the formula doesnt change outcomes. The larger guppy changed the pH by .82 and the smaller guppy changed the pH by .16. Conclusion: At the end of the experiment our hypothesis was shown to be correct. The larger guppy needed more dissolved oxygen then the smaller guppy. The difference between the pH change from small guppy to large guppy was .66 which means that the larger guppy produced more carbon dioxide. The Respiratory rate difference was .0248 for 30 minutes which shows that larger fish use more oxygen and produce more co2 than smaller fish....
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aerobic respiration - Guppy Large Guppy Fish Volume (ml)...

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