- Lesson 4.11: Life Science – Photosynthesis & Respiration H. Turngren, Minnesota Literacy Council, 2014 p.1 GED Science Curriculum SCIENCE Lesson Summary: This week students will watch a video explaining photosynthesis. Students will practice note taking and answering questions while watching the video.
- Photosynthesis vs. Cellular Respiration. While in photosynthesis carbon dioxide and water yield glucose and oxygen, through the respiration process glucose and oxygen yield carbon dioxide and water. They work well since living organisms supply plants with carbon dioxide which undergoes photosynthesis and produces glucose and these plants.
- Photosynthesis and plant cellular respiration are ‘‘complex dynamic processes’’ because of their. Abstractness and multiple ecological levels (Chi, 2001). These processes are ‘‘nested systems’’ in that the. Plant is a biological system in its own entity, and is a component within the larger global ecosystem.
- Photosynthesis And Cellular Respiration Worksheet Middle School Pdf
- Photosynthesis And Cellular Respiration Practice Test Pdf
- Photosynthesis Vs Cellular Respiration Pdf
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PMID: 16668030
This article has been cited by other articles in PMC.
Abstract
A mass spectrometric method combining 16O/18O and 12C/13C isotopes was used to quantify the unidirectional fluxes of O2 and CO2 during a dark to light transition for guard cell protoplasts and mesophyll cell protoplasts of Commelina communis L. In darkness, O2 uptake and CO2 evolution were similar on a protein basis. Under light, guard cell protoplasts evolved O2 (61 micromoles of O2 per milligram of chlorophyll per hour) almost at the same rate as mesophyll cell protoplasts (73 micromoles of O2 per milligram of chlorophyll per hour). However, carbon assimilation was totally different. In contrast with mesophyll cell protoplasts, guard cell protoplasts were able to fix CO2 in darkness at a rate of 27 micromoles of CO2 per milligram of chlorophyll per hour, which was increased by 50% in light. At the onset of light, a delay observed for guard cell protoplasts between O2 evolution and CO2 fixation and a time lag before the rate of saturation suggested a carbon metabolism based on phosphoenolpyruvate carboxylase activity. Under light, CO2 evolution by guard cell protoplasts was sharply decreased (37%), while O2 uptake was slowly inhibited (14%). A control of mitochondrial activity by guard cell chloroplasts under light via redox equivalents and ATP transfer in the cytosol is discussed. From this study on protoplasts, we conclude that the energy produced at the chloroplast level under light is not totally used for CO2 assimilation and may be dissipated for other purposes such as ion uptake.
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Photosynthesis And Cellular Respiration Worksheet Middle School Pdf
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