The linear mass density can then be understood as the derivative of the mass function with respect to the one dimension of the rod (the position along its length =) The SI unit of linear mass density is the kilogram per meter (kg/m). Linear density of fibers and yarns can be measured by many methods.
An Arabidopsis thaliana chlorophyll(ide) a oxygenase gene (cao), which is responsible for chlorophyll b synthesis from chlorophyll a, was introduced and expressed in a photosystem I-less strain of the cyanobacterium Synechocystis sp.
Photosystem II is also a complex of. > 1  20 different protein molecules bound to. 2  50 or more chlorophyll a molecules 2 molecules of the reaction center chlorophyll P680. 2 accessory molecules close to them. 3  some half dozen carotenoid molecules. These also serve as antenna pigments. 4  2 molecules of plastoquinone.