Question

Do you expect energy of special pair of bacteria chlorophyl molecule to be higher or lower than energy of an isolated bacteria chlorophyll?

Short answer

Shorter wavelengths (like blue) have more energy, while longer wavelengths (like red) have less wavelength. The majority of the blue and red wavelengths are absorbed by chlorophyll. As a result, it reflects the green wavelengths in the middle of the visible spectrum.

Step-by-step solution

Bacterial Chlorophyll

Bacteriochlorophyll is found in several species of photosynthetic Proteobacteria, including anaerobic sulfur-oxidizing bacteria (Chromatium, Ectothiorhodospira) and others like Rhodobacter and Rhodospirillum, showing absorption peaks in vivo at 800–805 nm and approximately 870 nm.

Isolated Bacteria Chlorophyll

The use of column chromatography and solvent extraction techniques to separate chlorophyll from spinach leaves has been developed. UV-Vis, IR, and mass spectrometry were used to establish the purity and authenticity of chlorophyll a.

Special pair of chlorophyll bacteria

Different wavelengths of light are absorbed by the chlorophyll a particular pair of the two photosystems. At 680 nm, the PSII special pair absorbs best, while at 700 nm, the PSI special absorbs best.

As a result, the special pairs are referred to as P680 and P700, respectively. The light-dependent mechanisms convert light energy into ATP, an energy storage molecule, and NADPH, a reduced electron transporter, both of which are necessary for the next step of photosynthesis.