Teacher Instructions

7. The Phipps-Bird respiration chamber used in this investigation has been modified to acceptthe Vernier carbon dioxide sensor. See figure 1 for alterations.8. Sample sets of data and sample calculations follow.Table 1. Change in Respiration Chamber Carbon Dioxide Levels (ppm/s)OrganismTrial #1Trial #2AverageMouse37.2745.6441.46Page 2

Table 1. Change in Respiration Chamber Carbon Dioxide Levels (ppm/s)Trial12AverageMouse37.27 ppm/s45.64 ppm/s41.46FrogTable 2: Animal Weight Information (grams)OrganismWeight of CageWeight of Cage andAnimalWeight of AnimalMouse17620933Table 3: Team Respsiration Rate SummaryOrganismAverage ppm/SecondWeight (g)ppm/second/gMouse41.46331.26Table 3. Team Respiration Rate SummaryMouseFrogAve. ppm/SecWeight (grams)ppm/Sec/Gram41.46331.26Page 3

Table 4: Class Respiratory Rate SummaryOrganisms----------->Team 1Mouse1.26Team 2Team 3Team 4Team 5Team 6Team 7Team 8AveragePage 4

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