Carbon during photosynthesis

Precipitation Reactions. A change in the pH of a natural water may result in the precipitation from solution of those species that are at or near saturation if one of the precipitating species enters into acid-base reactions. The classical example is the photosynthetic precipitation of calcium carbonate. During photosynthesis, aquatic plants may remove sufficient C02 to raise the pH to the value at which the concentration of carbonate times that of calcium exceeds the solubility product for calcium carbonate. If nucleation occurs, calcium carbonate will be precipitated. 

Coccolithophores assimilate carbon during photosynthesis, leading to similar biogeochemical impacts to other phytoplankton that do not possess mineral shells. They also, however, assimilate carbon into biomass. 

As the carbon of propane, G forms carbon dioxide. CO, it is losing hydrogen and gaining oxygen, which tells us that the carlton is being oxidized, which is the opposite of what happens to carbon during photosynthesis. 

Plants store solar energy by photosynthesis. During photosynthesis, carbon dioxide (COj) and water (H2O) in the presence of light are converted into glucose (C(,H 20(,) by the following chemical equation ... 

Vogel, J.C. 1980 Fractionation of the Carbon Isotopes During Photosynthesis. New York, Springer. 

Fig. 7.—The Pentose Phosphate Cycle for the Incorporation of Carbon Dioxide into Carbohydrates During Photosynthesis.86-, 38...

Thus we calculated the value E based on equation (10) for several compounds and radicals during photosynthesis - tables 4 and 5. For radical - C =0 the calculations were made in two possible variants of activity of valence orbitals of carbon atoms. The compliance of calculated E values with reference data [12,13] was in the range of 5% for all bonds of covalence type without introducing the coefficient 0.83. 

Early reviews by O Leary (1981) and Farquhar et al. (1989) have provided the biochemical background of carbon isotope fractionations during photosynthesis, with more recent accounts by Hayes (2001) and Freeman (2001). 

Park R, Epstein S (1960) Carbon isotope fractionation during photosynthesis, Geochim Cosmochim Acta 21 110-126... 

Carbohydrates Ultimately, carbohydrates cire the product of photosynthesis, the process in plants that combines carbon dioxide, water, and energy with chlorophyll and other biomolecules to produce Ccirbohy-drates and release oxygen gas. The major carbohydrate formed during photosynthesis is glucose. Plants and animals sometimes combine simple carbohydrates such as glucose into more complicated carbohydrates such as stcirch, glycogen, and cellulose. 

Carbon-14 atoms produced in the upper atmosphere combine with oxygen to yield 14CC>2, which slowly diffuses into the lower atmosphere, where it mixes with ordinary 12CC>2 and is taken up by plants during photosynthesis. When these plants are eaten, carbon-14 enters the food chain and is ultimately distributed evenly throughout all living organisms. 

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