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 I (PS I) - Part of the LDR where chlorophyll is energized a 2nd time to make 2 NADPH. The reaction center of PS I uses light energy of 700 nm. Photosystem II (PS II) - Part of the LDR where photolysis occurs and chemiosmosis makes ATP via photophosphorylation.