Cellular Respiration

Sita M Damaraju (Fellow)

6H12O6 + 6O2 → 6CO2 + 6H2O + ATPGlucose + Oxygen → Carbon dioxide + Water + Energy (ATP)

Vernier Lab Part II

• Determine whether germinated or non-germinated peas respire.

• Use a CO2 gas sensor to measure concentrations of carbon dioxide.

• Study the effect of temperature on cell respiration.

• Compare the rates of cell respirations in germinated peas and non-germinated peas.

Materials

• CO2 sensor• 250mL respiration chamber Computer• Logger pro software• Lab pro (sensor-computer interface)• 25 germinating peas• 25 non-germinating peas• Thermometer

Set upCO2 sensor

Lab pro

Germinated Peas

Non germinated peas

Results

Extensions

• Measure O2 concentration using germinated and non germinating peas at different temperatures

• Measure pressure changes during respiration of germinating and non-germinating peas at different temperatures (AP Biology lab)

• Simultaneously measure O2 and CO2 concentrations at different temperatures for germinating and non-germinating peas.

Sensors

• CO2 sensor

• O2 sensor• Gas pressure sensors