BABS1201 Lecture Notes - Lecture 12: Anoxygenic Photosynthesis, Carbon Fixation, Radiant Energy
19 Nov 2018
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Document Summary
It is responsible for the liberation of oxygen and the consumption of carbon dioxide. Photosynthesis has transformed earth from a toxic wasteland into the hospitable environment we know today. Photosynthesis is the physico-chemical process used by plants, algae, and photosynthetic bacteria. All use light energy to drive the synthesis of organic compounds. Stores energy in petroleum, natural gas, coal and ethanol. It supplies our needs for clothing and building materials. Conversion of unusable sunlight energy into usable chemical energy. Electrons supplied inorganic (h2o, h2s, h2 etc) or organic molecules. Carbon dioxide is reduced to glucose, which is used for both biosynthesis and energy production. In plants, algae and certain (oxygenic) photosynthetic bacteria, the photosynthetic process results in the release of molecular oxygen and the removal of carbon dioxide from the atmosphere that is used to synthesise carbohydrates (oxygenic photosynthesis). Light energy + water + carbon dioxide oxygen + sugar.
