PHOTONS PER MOLECULE. “The minimum stoichiometry of a CCM is 1 mol ATP per mol CO2 which, with cyclic photophosphorylation as the ATP source, with 1.14 mol photons needed to generate 1 mol ATP means a total of 8.43 + 1.14 = 9.57 mol photons per mol CO2…gives a total cost of photosynthetic growth of at least 15.5 mol photons per mol CO2.”
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