Photosynthesis 3
By definition, photosynthesis is the trapping of sunlight energy and its conversion to chemical energy, followed by synthesis of sugar phosphates that become converted to sucrose, cellulose, starch and other end products. In plants, photosynthesis takes place in the chloroplasts. Chloroplasts are formed of two membrane layers, the stroma, and the grana. The two outer membranes surround the stroma, which is the semi-fluid interior of the chloroplast. A membrane runs through the stroma and forms the grana. The grana are stacks of thylakoid disks that hold photosystems. The two stages of photosynthesis happen at two different points in the chloroplast. At the inner membrane system, light is absorbed into the chloroplast and ATP (adenosine triphosphate) is formed. This set of reactions is known as the light-dependent reactions. Light is absorbed by different photosynthetic pigments in the stroma. The two different pigments are chlorophylls and carotenoids. The difference between these two pigments is that chlorophylls are green and carotenoids can be orange, red or yellow. It is these two pigments that give plants their color. In the stroma the second part of photosynthesis, known as the light-independent reactions, is com
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Some common words found in the essay are:
, ATP NADPH, NADP NADP, Benson Cycle, PGAL PGAL, Acid Metabolism, Calvin-Benson Cycle, electron transport system, transport system, electron transport, energy electron, stomata closed, cyclic pathway, noncyclic pathway, carbon dioxide, p700 chlorophyll, carbon fixation, RuBP NADPH, Calvin Benson, moves electron transport, benson cycle, type carbon fixation, calvin benson cycle, stomata closed day,
Approximate Word count = 1047
Approximate Pages = 4 (250 words per page double spaced)
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