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.
Split and merge into it. Answer by Nitro 171. Confidence votes 28. The structural difference between chlorophyll 'a' and chlorophyll 'b' is this that the functional group bonded to the porphyrin is methyl group (-CH3) in chlorophyll 'a' and carbonyl group (-CHO) in chlorophyll 'b'.hlorophyll a absorbs energy from most wavelengths of violet/blue  and orange/red. Chlorophyll b is more soluble that chlorophyll a in  polar solvents and more yellow in col â¦ or. It absorbs most energy  from blue light.