2H 2 O → 2H 2 + O 2 Total Reaction . Join Yahoo Answers and get 100 points today. O2. In nature, the oxygen-evolving complex (OEC), a Mn 4 Ca cluster in the enzyme Photosystem II catalyzes this transformation. In water oxidation, in addition to oxygen release, electrons and protons are also produced. Join. Still have questions? 10 years ago. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. Answer Save. S. Lv 7. Water oxidation is the primary reaction of both natural and artificial photosynthesis. Photosynthetie water oxidation is unique to plants and cyanobacteria, it occurs in thylakoid membranes. Answer: During oxygenic photosynthesis, light energy transfers electrons from water (H2O) to carbon dioxide (CO2), to produce carbohydrates. Electrons could be used to reduce a variety of molecules such as H 2 O, CO, CO 2 or N 2 to produce useful compounds in artificial photosynthesis . 4H + + 4e − → 2H 2 Reduction (generation of dihydrogen) . 2H 2 O → O 2 + 4H + + 4e − Oxidation (generation of dioxygen) . Water is oxidized during photosynthesis.Oxidation number of O changes from -2 to 0. It is also important in the making of food; hydrogen atoms found in water make up part of the glucose molecules that plants use as nourishment. Favorite Answer. Figure: Kok Cycle. In this transfer, the CO2 is "reduced," or receives electrons, and the water becomes "oxidized," or loses electrons. The energy of the resulting electrons and protons released during water oxidation is then stored as the biological equivalent of hydrogen. Contribution of water oxidation to the ATP synthesis. Solved: During photosynthesis, is oxidized, while is reduced. The mechanism by which water is oxidized occurs through a 5 stage Kok cycle illustrated below? Relevance. This transforms the water … Water-oxidation catalysts mediate the four-electron, four-proton oxidation of water to dioxygen.. The Sn states in the Kok diagram denote different discrete oxidation states where n the number of oxidative “equivalent” stored in the OEC during cycle progression. 4.21. Water oxidation is the primary reaction of both natural and artificial photosynthesis. what is water oxidized to in photosynthesis? 1 Answer. Trending Questions. Trending Questions. Source(s): S. 1 0. The role of H2O, or water, in photosynthesis, is essential to ATP, which is the energy process that drives photosynthesis. Water oxidation is one of the half reactions of water splitting: . Developing active and robust water oxidation catalysts (WOCs) is the key to constructing efficient artificial photosynthesis systems, but it is still facing enormous challenges in both fundamental and applied aspects. 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