<P> Chlorophyll molecules are arranged in and around photosystems that are embedded in the thylakoid membranes of chloroplasts . In these complexes , chlorophyll serves three functions . The function of the vast majority of chlorophyll ( up to several hundred molecules per photosystem ) is to absorb light . Having done so , these same centers execute their second function : the transfer of that light energy by resonance energy transfer to a specific chlorophyll pair in the reaction center of the photosystems . This pair effects the final function of chlorophylls , charge separation , leading to biosynthesis . The two currently accepted photosystem units are photosystem II and photosystem I , which have their own distinct reaction centres , named P680 and P700 , respectively . These centres are named after the wavelength ( in nanometers ) of their red - peak absorption maximum . The identity , function and spectral properties of the types of chlorophyll in each photosystem are distinct and determined by each other and the protein structure surrounding them . Once extracted from the protein into a solvent ( such as acetone or methanol ) , these chlorophyll pigments can be separated into chlorophyll a and chlorophyll b . </P>
where will chlorophyll be found in the chloroplast
in and around photosystems that are embedded in the thylakoid membranes of chloroplasts