Stage Three:
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Stage three is the Calvin Cycle, according to Reece, Campbell, Cain, Urry, Minorsky, Wasserman & et al, 2011. During the Calvin Cycle, carbon fixation, the inclusion of CO2 from the air with organic compounds present within the cell, takes place and the fixed carbon is reduced to carbohydrate. This requires additional electrons, as well as additional chemical energy from NADPH and ATP. This creates the complex starch Glucose. The unused glucose is stored in cellulose located within plant mesophyll. Chloroplast is important to this process because it houses the thylakoids where the chlorophyll is located. It is important to reiterate that these thylakoids are located in the leaf structure of plants. The location of the chlorophyll is important. The location of the leaf in relation to the plant body is to ensure the optimal amount of sunlight is absorbed so that the maximum amount light can be captured and used.