1. C ELL R ESPIRATION LabQuest Activity 11B Cell respiration refers to the process of converting the chemical energy of glucose into a form usable by organisms. Glucose may be oxidized (broken down) completely if sufficient oxygen is available as shown in the following reaction: C 6 H 12 O6 + 6O 2  6H 2 O + 6CO 2 + energy L EARNING T ARGETS : In this experiment you will…  Use a CO 2 Gas Sensor to measure concentrations of carbon dioxide during respiration.  Study the effect of temperature on cell respiration rate.  Compare the rates of cell respiration in germinating and non-germinating peas.

2. GROUPGERMINATED Room Temp: 22C° NON- GERMINATED GERMINATED Cold Temp: 5C° 12.2554-0.0204841.0918 22.2888-0.321811.2985 31.12220.10412.79946 42.1409-0.140642.0097 51.68750.468431.8017 6 -0.139651.3562 71.3102-0.123161.1584 84.91170.902111.6517 92.12670.128911.7643 101.5476-0.111341.1678 TOTALS: AVERAGE:

4. QUESTIONS Please answer the following questions on a separate sheet of paper using complete sentences. Attach as the last page of your lab report. 1. Did this lab activity provide evidence that cell respiration occurred in peas? Explain how you know. 2. Compare the rate of respiration for germinating pea seeds versus non-germinating pea seeds. 3. Why do germinated peas undergo cell respiration? 4. What is the effect of temperature on the rate of cell respiration in peas? 5. How was the rate of respiration calculated? (Hint: Think of the equation of a line.) Express the rate of respiration for germinating pea seeds to the nearest thousandths place.