The pigments and proteins that convert light energy to chemical energy and begin the process of electron transfer are known as reaction centers. Light-dependent reactions When a photon of light hits the reaction center, a pigment molecule such as chlorophyll releases an electron. ...
The net overall chemical reaction of plant photosynthesis is shown in the equation below, where {CH2O} stands for a carbohydrate (sugar). The photochemical reaction in photosynthesis belongs to the type known as oxidation-reduction, with CO2 acting as the oxidant (hydrogen or electron acceptor) an...
Photosynthesis is a physio-chemical process carried out by photo-auto-lithotrophs by converting light energy into chemical energy. Among the endless diversity of living organisms in the world, producers are a unique breed.Unlike consumers (herbivores, carnivores, omnivores, or decomposers) that rely ...
Photosynthesiscan be described as a process that allows some living organisms to convert light energy into chemical energy, which is used to synthesize organic compounds.Photosynthesisdirectly supports plants, algae, and someprokaryotes, and also indirectly sustains most of life in the biosphere (setting...
Structure and spectroscopy of reaction centers of purple bacteria The fundamental photochemical reaction of photosynthetic energy conversion, which transforms the photon energy of light in chemical free energy, takes plac... AJ Hoff,J Deisenhofer - 《Physics Reports》 被引量: 518发表: 1997年 ...
This type of photosynthesis could have produced banded iron formations similar to those produced by oxygenic photosynthesis. Microfossils, stromatolites, and chemical biomarkers in Australia and South Africa show that cyanobacteria containing chlorophyll a and carrying out oxygenic photosynthesis appeared by ...
Laboratory of Chemical BiodynamicsPhotochemistry and PhotobiologyTributsch, H., Reaction of Excited Chlorophyll Molecules at Electrodes and in Photosynthesis. Photochemistry and Photobiology, 1972. 16(4): p. 261-269. :Reaction of Excited Chlorophyll Molecules at Electrodes and in Photosynthesis. H. ...
A model for the photochemical steps in photosynthesis is described in which only one type of reaction center participates in the chemical conversion of exc... J Franck,JL Rosenberg - 《Journal of Theoretical Biology》 被引量: 55发表: 1964年 Photosynthesis in Symbiotic Algae Symbiosis is an evolu...
Electronsthattrapthesun’senergypasstheenergytohigh-energycarrierssuchasATPorNADPH,whereitisstoredinchemicalbonds.light-independentreactions暗反应[lait,indi΄pendəntri(:)΄ækſən]Thesecondstageinphotosynthesis,alsocalledtheCalvin-Bensoncycle,whichdoesnotrequirelight.Duringthesixstepsofthecycle,...
A model for the photochemical steps in photosynthesis is described in which only one type of reaction center participates in the chemical conversion of excitation energy. Two types of energy-collecting pigment systems can occur, but in distinction to most current models the energy is delivered to ...