photosystems are functional and structural units of protein complexes involved in photosynthesis

absorber algae antenna atoms bacteria biology botany carotenoids cell center chemical chlorophyll chloroplast cofactors complex cyanobacteria cytoplasm diagram education fluorescent genetic illustration iron light lipid membrane molecule oxygen photochemistry photosynthesis photosystem pigment plant polypeptides protein proton reaction science split stroma structure subunits thylakoid transport water wavelengths