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.
Here are some of the key differences between the photosystems: 1  Special pairs. The chlorophyll a special pairs of the two photosystems absorb different wavelengths of light. 2  Primary acceptor. The special pair of each photosystem passes electrons to a different primary acceptor. 3  Source of electrons.