BIOL 1000 Chapter Notes - Chapter 9: Anaerobic Respiration, Biofuel, Exergonic Reaction

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Remember that a catabolic pathway breaks down compounds in order to release energy. Some prokaryotes carry out cellular respiration, most eukaryotes do however. Anaerobic respiration: using a substance other than oxygen to harvest chemical energy. During the redox reaction of cellular respiration, glucose is oxidized to carbon dioxide, and oxygen is reduced to water. The electrons lose potential energy along the way and energy is released. **in respiration the oxidation of glucose transfers electrons to a lower energy state, liberating the energy that becomes available for atp synthesis. If energy is released from a fuel all at once, energy cannot be harvested as efficiently, for example if a gasoline tank explodes, we cannot drive a car very well. In the case of cellular respiration, glucose is not harvested all at once immediately, the harvesting of glucose for chemical energy occurs in multiple steps. At key steps electrons are stripped from glucose, each electron will travel with a proton (hydrogen atom).

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