lab 7 - Valerie Henderson 10/15/07 Lab #7 Plants Need...

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Valerie Henderson 10/15/07 Lab #7 Plants Need Sunlight Too Abstract: Plants use a process called photosynthesis to produce energy for themselves in the form of glucose. They use respiration, which performs glycolysis, which breaks down the glucose into a form the plant can use for energy to carry out its cellular processes. In this experiment, we tested how the amount of light affects the plant’s rate of photosynthesis. We allowed no light to penetrate the leaves of a plant and measured the level of oxygen and carbon dioxide with gas sensors. We used a control group of plant leaves that were exposed to light because we know that plants require light for photosynthesis. The control group was also placed in a respiration chamber and the levels of oxygen and carbon dioxide were measured with the gas sensors. We found the plants exposed to light carried out photosynthesis by the positive amount of oxygen present in the respiration chamber and the plants not exposed to light did not carry out photosynthesis because there was almost no oxygen in the chamber. Plants definitely need light to carry out photosynthesis and respiration because respiration depends on photosynthesis to make the glucose for
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This note was uploaded on 04/13/2008 for the course BIOL 171L taught by Professor Riley during the Fall '07 term at Hawaii.

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lab 7 - Valerie Henderson 10/15/07 Lab #7 Plants Need...

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