Big Ideas in the Digital BioLab • #digitalbiolab • EdTechTeacher Boston iPad Summit 2014 Cellular Respiration Inquiry using Vernier Lab Probeware AP Biology Big Idea 2: Biological systems utilize free energy and molecular building blocks to grow, to reproduce and to maintain dynamic homeostasis. Enduring Understanding Growth, reproduction and maintenance of the organization of living systems require free energy and matter. Are seeds alive? Alaska Peas Consider this equation Mung Beans C6H12O6 + 6 O2(g) → 6 H2O + 6 CO2(g) + energy
Cell respiration refers to the process of converting the chemical energy of organic molecules
into a form immediately usable by organisms. Glucose may be oxidized completely if sufficient
oxygen is available.
Equipment & Materials • Vernier Labquest 2 • Vernier CO2 Gas Sensor • 250 mL Biochambers Step 1. Are you ready to measure CO2? Follow these annotated screens. Do your settings look like this? GO TO Step 2. 1 Big Ideas in the Digital BioLab • #digitalbiolab • EdTechTeacher Boston iPad Summit 2014 Step 2. Today’s experiment will run for 60 seconds. Set the duration and sampling rate for your CO2 gas sensor. Select OK when your Labquest screen matches the settings above. Step 3. Run experiments. Step 4. Compare your graphs. What can you conclude by overlaying at least two runs? Does CO2 increase, stay the same, or decrease? 2 Big Ideas in the Digital BioLab • #digitalbiolab • EdTechTeacher Boston iPad Summit 2014 Step 5. Reset the Labquest. Draw your results on the Vernier graph below. Be sure to label your graphs. Team hypothesis 3