PhotochemistryPhotochemical ProcessesBacteriochlorophyllsLightAldrinHalorhodopsinsPhotosynthetic Reaction Center Complex ProteinsSensory RhodopsinsBacteriorhodopsinsRhodobacter sphaeroidesPhotosynthesisHalobacterium salinarumHalobacteriumSpectrophotometryRhodopseudomonasPhotolysisRhodopsinLight-Harvesting Protein ComplexesPhotosystem II Protein ComplexUltraviolet RaysCarotenoidsOxidation-ReductionKineticsElectron TransportBacterial Proteins