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.
The charged reaction center chlorophyll (P680 +) is then reduced back to its ground state by accepting an electron. In Photosystem II, the electron that reduces P680 + ultimately comes from the oxidation of water into O 2 and H + through several intermediates.