Lab Experiment: The Importance Of Cellular Respiration
Nevertheless, cellular respiration may vary between species. The majority of cells for both prokaryotic and eukaryotic organisms …show more content…
The materials required were, two LabQuest2 handheld units, 10 mealworms, a balance, 1—250 mL Nalgene bottle, 1 L beaker, Vernier CO2 gas sensor, mung bean sprouts—150 mL, a thermometer, ice and cold water. Group 1 was placed in charge of the mealworms while Group 2 was in charge of the mung bean sprouts. However, for the experiment, the mung bean sprouts were not available and were substituted for string green beans instead.
Both groups set the slide switch on the CO2 Gas Sensor to Low and connected the CO2 Gas sensor to the LabQuest2 handle unit. Starting a new file on two separate LabQuest2. Group 1 and Group 2 set the Data Collection feature to rate 0.2 samples/min, interval 5 min/sample, duration 30 min and changed the units from CO2
Gas Low to carbon dioxide production (ppt). Group 1 and Group 2 weighed the Nalgene bottle and recorded the mass (see table-1) in order to avoid discrepancies in the final results of the …show more content…
In order to achieve this, divided the cumulative carbon dioxide production (ppt) from table-3 by the mass of the organism (g) from table-1. The results of table-4 show the amount of CO2 that has been produced during the experiment by the green beans and mealworms during each condition, room, and cold temperatures. The final numbers agree with the previously data collected, in showing an increase of the CO2 produced when the ppt is higher while showing a decrease of CO2 produced when the ppt is lower. Agreeing with Owen K. Atkin, Everad J. Edwards, and Beth R. Loveys article ‘Response of root respiration to changes in temperature and its relevance to global warming’, the root respiration that released the CO2 has been steadily increasing due to the warmer weather that increases the rate of cellular respiration, therefore producing more CO2 (Edwards, Atkin, & Lovelys, 2000). The data calculated for table-4 represents the CO2 being released and analyzed by the gas sensor that was placed in the Nalgene bottle at the beginning of the experiment.
Discussion and Conclusion After examining the graph and the data, the conclusion was reached that the official hypothesis was correct, apart from the deviation, for the green beans. The CO2 production increased rapidly during the room temperature portion of the experiment, whereas the CO2 production continued to increase slowly in the mealworms and steadied