At a reaction center, it can take the form of either P680 or P700, and the wavelength difference of 20 nanometers depends on which proteins surround it.  Molecules not at reactions centers are called antenna molecules, and are not usually found in the bacterio- type or the E type.  In solution, it gives off a red-orange glow when excited by ultraviolet light.  It contains a phytol side chain attached to a porphyrin head that contains magnesium.  
At a reaction center, it can take the form of either P680 or P700, and the wavelength difference of 20 nanometers depends on which proteins surround it.  Molecules not at reactions centers are called antenna molecules, and are not usually found in the bacterio- type or the E type.  In solution, it gives off a red-orange glow when excited by ultraviolet light.  It contains a phytol side chain attached to a porphyrin head that contains magnesium.  FTP, name this molecule with a characteristic green color that is crucial to photosynthesis.
At a reaction center, it can take the form of either P680 or P700, and the wavelength difference of 20 nanometers depends on which proteins surround it.  
chlorophyll