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Organisms that contain bacteriochlorophyll conduct photosynthesis to sustain their energy requirements, but the process is anoxygenic and does not produce oxygen as a byproduct. They use wavelengths of light not absorbed by plants or cyanobacteria. Replacement of Mg 2+ with protons gives bacteriophaeophytin (BPh), the phaeophytin form.
Purple bacteria use bacteriochlorophyll and carotenoids to obtain the light energy for photosynthesis. Electron transfer and photosynthetic reactions occur at the cell membrane in the photosynthetic unit which is composed by the light-harvesting complexes LHI and LHII and the photosynthetic reaction centre where the charge separation reaction ...
Pigment color differs from structural color in that it is the same for all viewing angles, whereas structural color is the result of selective reflection or iridescence, usually because of multilayer structures. For example, butterfly wings typically contain structural color, although many butterflies have cells that contain pigment as well. [3]
It is advised to check the references for photos of reaction results. [1] Reagent testers might show the colour of the desired substance while not showing a different colour for a more dangerous additive. [2]
Date/Time Thumbnail Dimensions User Comment; current: 12:37, 13 June 2020: 226 × 250 (17 KB): Michael D. Turnbull: Redrew to Wikipedia/ACS standard and correct structure for the simplest known example of bacteriochlorophyll ''d''.
Date/Time Thumbnail Dimensions User Comment; current: 16:45, 12 June 2020: 312 × 280 (19 KB): Michael D. Turnbull: Corrected structure, to ACS standard drawing. 21:25, 4 December 2008
Bacteriochlorophyll, related compounds in phototrophic bacteria; Chlorophyllin, a semi-synthetic derivative of chlorophyll; Deep chlorophyll maximum; Chlorophyll fluorescence, to measure plant stress; Purple Earth hypothesis, a scientific hypothesis that explains the evolution of red-blue spectral affinity of chlorophyll.
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