31B Photosyn-Resp (CO2)

31B Photosyn-Resp (CO2) - Experiment 31B Photosynthesis and...

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Biology with Calculators 31B - 1 Experiment 31B Photosynthesis and Respiration Plants make sugar, storing the energy of the sun into chemical energy, by the process of photosynthesis. When they require energy, they can tap the stored energy in sugar by a process called cellular respiration. The process of photosynthesis involves the use of light energy to convert carbon dioxide and water into sugar, oxygen, and other organic compounds. This process is often summarized by the following reaction: 6 H 2 O + 6 CO 2 + light energy C 6 H 12 O 6 + 6 O 2 Cellular 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 by the following equation: C 6 H 12 O 6 + 6 O 2 6 H 2 O + 6 CO 2 + energy All organisms, including plants and animals, oxidize glucose for energy. Often, this energy is used to convert ADP and phosphate into ATP. Using the CO 2 Gas Sensor, you will attempt to monitor the carbon dioxide consumed or produced by plants. C O G a s S e n o r 2 Figure 1 MATERIALS LabPro or CBL 2 interface 250-mL respiration chamber TI Graphing Calculator plant leaves DataMate program 500-mL tissue culture flask Vernier CO 2 Gas Sensor lamp aluminum foil forceps
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31B - 2 Biology with Calculators Experiment 31B PROCEDURE 1. Plug the CO 2 Gas Sensor into Channel 1 of the LabPro or CBL 2 interface. Use the link cable to connect the TI Graphing Calculator to the interface. Firmly press in the cable ends. 2.
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This note was uploaded on 01/17/2012 for the course BIOL 470 taught by Professor Allannelson during the Spring '00 term at Tarleton.

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31B Photosyn-Resp (CO2) - Experiment 31B Photosynthesis and...

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