Cellular Respiration Experiment

Materials and Methods Materials needed for the cellular respiration experiment were two chambers to trap the CO2, a scale,10 grams of germinated chickpeas, germinated black beans, germinated cranberry beans, germinated red kidney beans, as well as germinated mung beans and glass beans. A Pasco CO2 sensor as well as a computer with SPARKvue software are also required. This experiment contained an independent variable: type of beans and dependent variable: amount of carbon dioxide, this is important to note because it identifies which variables are being altered during the experiment as well as which are not. The independent variable being the species of germinated beans due to the amount of carbon dioxide emitted from each

Positive and negative controls for this experiment were a positive control of mung beans and negative control of glass beans. The positive control being from experiment one during the lab section where germinated mung beans, dormant mung beans and glass beads were all examined and compared. Germinated mung beans were concluded to have higher cellular respiration due to the results, emitted the most amount of C02. The negative control of glass beads came from the same experiment except that the glass beads did not emit C02 the way that the germinated mung beans did and therefore could be used as a way to tell if future experiments were not working properly. Positive and negative controls are important because they allow for the researcher to test if their experimenting is functioning correctly by comparing it to results that are to be expected. For instance, if determined that glass beads do not emit C02 that would indicate that it is a negative control and thereby cannot be anything else. Germinated mung beans are a positive control because it could be determined from the results that it produced the highest amount of C02 and therefore had the highest cellular respiration, so all future results could be compared to it to make sure the experiment was not