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Photosynthesis is the process in which light energy, trapped by chlorophyll, is used to convert carbon dioxide and water into glucose and oxygen.
Member rating: No Rating | Words: | Submitted: Wed Sep 24 2003
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Plan Introduction All living organisms need food. Animals take in 'ready-made' food which they digest. They use the digested products for energy and to build new cells and tissues. Plants also require raw materials for building tissues and a source of energy. They manufacture everything they need out of simple ions and compounds available in the environment. The building up of complex molecules from simpler substances requires energy and enzymes. The enzymes are in the plants cells and the energy comes from sunlight. The process is called photosynthesis. Plants are able to absorb and use light energy because they have a green pigment, chlorophyll, contained in chloroplasts in some of their cells. Chlorophyll allows the energy in sunlight to drive chemical reactions. Chloroplasts act as energy transducers, converting light energy into chemical energy. Photosynthesis is the process in which light energy, trapped by chlorophyll, is used to convert carbon dioxide and water into...
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