● However, `color{violet}("living organisms")` have also got`color{violet}(" inorganic elements")` and compounds in them.
● A slightly different but `color{violet}("destructive experiment")` has to be done.
● One weighs a small amount of a `color{violet}("living tissue")` (say a leaf or liver and this is called `color{brown}("wet weight")` ) and dry it.
● All the `color{violet}("water, evaporates.")`
● The remaining material gives `color{brown}("dry weight. ")`
● Now if the `color{violet}("tissue")` is fully burnt, all the `color{violet}("carbon compounds")` are `color{brown}("oxidised")` to gaseous form (`CO_2`, water vapour) and are removed.
● What is remaining is called `color{brown}("‘ash’.")`
● This ash contains `color{violet}("inorganic elements")` (like calcium, magnesium etc).
● `color{violet}("Inorganic compounds")` like `color{violet}("sulphate, phosphate")`, etc., are also seen in the `color{violet}("acid-soluble fraction.")`
● Therefore elemental analysis gives elemental composition of `color{violet}("living tissues")` in the form of `color{violet}("hydrogen, oxygen, chlorine, carbon")` etc. while analysis for compounds gives an idea of the kind of `color{violet}("organic and inorganic")` constituents present in `color{violet}("living tissues.")`
● From a chemistry point of view, one can identify `color{brown}("functional groups")` like `color{violet}("aldehydes, ketones, aromatic compounds")`, etc.
● But from a `color{violet}("biological point")` of view, we shall classify them into `color{violet}("amino acids, nucleotide bases, fatty acids")` etc.
● However, `color{violet}("living organisms")` have also got`color{violet}(" inorganic elements")` and compounds in them.
● A slightly different but `color{violet}("destructive experiment")` has to be done.
● One weighs a small amount of a `color{violet}("living tissue")` (say a leaf or liver and this is called `color{brown}("wet weight")` ) and dry it.
● All the `color{violet}("water, evaporates.")`
● The remaining material gives `color{brown}("dry weight. ")`
● Now if the `color{violet}("tissue")` is fully burnt, all the `color{violet}("carbon compounds")` are `color{brown}("oxidised")` to gaseous form (`CO_2`, water vapour) and are removed.
● What is remaining is called `color{brown}("‘ash’.")`
● This ash contains `color{violet}("inorganic elements")` (like calcium, magnesium etc).
● `color{violet}("Inorganic compounds")` like `color{violet}("sulphate, phosphate")`, etc., are also seen in the `color{violet}("acid-soluble fraction.")`
● Therefore elemental analysis gives elemental composition of `color{violet}("living tissues")` in the form of `color{violet}("hydrogen, oxygen, chlorine, carbon")` etc. while analysis for compounds gives an idea of the kind of `color{violet}("organic and inorganic")` constituents present in `color{violet}("living tissues.")`
● From a chemistry point of view, one can identify `color{brown}("functional groups")` like `color{violet}("aldehydes, ketones, aromatic compounds")`, etc.
● But from a `color{violet}("biological point")` of view, we shall classify them into `color{violet}("amino acids, nucleotide bases, fatty acids")` etc.