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.
Report Abuse. Chlorophyll a is present in all photosynthetic organisms and is the green photosynthetic pigment. Chlorophyll b is an accessory pigment and absorbs different pigments than a. A absorbs energy from mostly blue-violet and orange-red wavelengths.B absorbs some energy from the green wavelengths.hey both reflect the green wavelengths. Alpha is the primary photosynthetic pigment and beta is the accessory pigment that collects the energy to pass on to chlorophyll alpha. Beta differs from alpha by its 7-formyl group. Its main function is to collect energy but a secondary function is to regulate the antenna size.