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Photosynthesis Intro & materials-methods

Photosynthesis Intro & materials-methods -...

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Introduction Photosynthesis is the metabolic process that plants use to trap solar energy and store it as chemical energy in the bond of organic molecules. All the living organisms need energy to sustain their own being and photosynthesis allows them to do so. Overall, photosynthesis uses six carbon dioxide molecules and twelve molecules of water along with sunlight to produce one molecule of glucose, six water and six oxygen molecules. In this process, carbon is fixed from carbon dioxide into glucose, while we have different water molecules in the end compared to the end. In photosynthesis, certain molecules called pigments absorb specific wavelengths of light and facilitate the process of producing energy. These light-absorbing pigments fall into three classes: a) chlorophylls, b) carotenoids, and c) phycobilins. The chlorophylls are the primary pigments that convert the energy to useful ones, while carotenoids and phycobilins function as accessory pigments that absorb different wavelengths of light and pass the energy to the chlorophylls so that the energy absorbed can be converted into useful ones. Our objectives in our experiments are to examine “the environmental effect on pigment composition” and “evolutionary history on pigment composition” of Barley. In experiment 1, we determined the
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