Saturday, 8 September 2012

Essay On Photosynthesis

Imagine; one day the whole world wakes up to all plants including the mango trees and other fruit plants lying down in the fields, withered, lifeless! It would be a global catastrophe!  As a rule, if the process of photosynthesis ceased, that would we the final outcome. So what is photosynthesis? If you are assigned on a photosynthesis essay, this is the first question that you must answer yourself. Photosynthesis is the process by which plants convert light energy to chemical energy and store it in the bonds of sugar. For plants to make sugar, they need water, light energy, carbon dioxide, and water to make sugar. . Photosynthesis takes place in the chloroplasts, and uses chlorophyll, which is the green pigment. It occurs on leaves and not in stems

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The role of photosynthesis on earth is undeniably fundamental. It brings existence to life on earth by being a source if food and oxygen. This is one aspect that you would consider to discuss when assigned on a photosynthesis essay.
Photosynthesis happens in two stages; the light reactions stage and the dark reaction stage. This is another idea that you would consider when writing a photosynthesis essay To begin with, the light stage is the energy fixing reaction stage. In this stage, light strikes chlorophyll and excites electrons to a higher energy state. The energy is hence converted to ATP and NADPH. In this process water is split to realize oxygen. The ATP and NADPH are used to make the C-C bonds in the Light Independent Process which is the dark stage.  The carbon dioxide from the atmosphere is captured and modified by the addition of Hydrogen to form carbohydrates.
In the dark stage, which is also called the carbon fixing reaction stage, carbon dioxide diffuses in to the cells.  It is then captured by ribulose biphosphate. Six molecules of carbon dioxide enter the Calvin cycle and produce one molecule of glucose 

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