BIOL 1130 Study Guide - Light-Dependent Reactions, Electron Acceptor, Cytochrome B6F Complex

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Lecture 19: sunlight maintains and increases the orderly of life by two methods. 1) directly: photosynthesis, which produces complex organic compounds. 2) indirectly: respiration of organic compounds, or another organism eats it: photoautotrophs. Gather energy directly from light and use it to assimilate small inorganic molecules into their own tissues. All green plants, few bacteria undergo photosynthesis. Must build all of their own molecules using co2, water, nitrates, sulfates: heterotrophs. Take in organic molecules and respire them and obtain energy in them. Include all animals and all parasitic plants, all fungi, and nonphotosynthetic parasitic plants: the way these organisms get nutrients influence the bodies and metabolism of plants and animals, plants can have both photoautotrophic and heterotrophic tissue. Wood and flowers are hetero. and survive by carbohydrates by phloem: photosynthesis is a complex process by which co2 is concerted to carbohydrate. Light is converted to chemical energy as it is captured by plant pigments.