How to analyse the chemical composition …

The elemental analysis of a cell shows that it is composed of various elements such as carbon, hydrogen, oxygen, chlorine, etc.

But what do these elements constitute? What are the properties of the compounds formed by these elements?

Only a chemical analysis can answer these questions.

Analytical techniques provide information regarding different compounds (organic and inorganic), their molecular formula and structures. They also help us to isolate and purify one compound from another.

Here is a simple experiment to find the Chemical Composition Analysis in Biomolecules.

Take a piece of living tissue and crush and mix it with an acid. After its filtration, we obtain two portions. The fraction which is obtained as filtrate is acid-soluble portion while the other fraction is acid-insoluble, which retain on the filter membrane. This shows that within the tissues, there two or more compounds which have distinct properties.

Take another piece of tissue and burn it, once all the water in it is evaporated. All carbon compounds will be oxidized on burning. The left out ash gives us the inorganic compounds like calcium, magnesium, sulfate, phosphate, etc., in the tissue.