BIOLOGY 2EE3 Lecture Notes - Lecture 13: Anaerobic Digestion, Sulfur Cycle, Oxidation State
4 Feb 2018
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Document Summary
If a compound can be catabolized to produce energy, then that process probably exists in some microorganisms. Used directly as energy sources, or indirectly to allow for energy to be extracted from other compounds. Loss of electron increase in oxidation number = oxidation. Gain of electrons decrease in oxidation number = reduction. Biological components: co2 (gas) c6h12o6, plants, algae, photosynthetic bacteria, c6h12o6, etc. Co2: eukaryotes, bacteria = decomposition, ch4 (gas) c6h12o6, bacteria. Antarctic ice: current and previous interglacial warm periods, increase in co2, methane (ch4), and nitrous oxide (n2o) Photosynthesis, respiration, and decomposition: if co2 fixation exceeds respiration, organic matter accumulates, positive net community productivity. Fermentation processes produce partially-oxidized organic end products: these can serve as nutrients for other organisms. Unable to swim because of high levels of cyanobacteria: toxic, secrete toxins into the water that can be harmful to humans, pets, and wildlife.
