Explain the following
Digestion​

Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasma. ... Digestion is a form of catabolism that is often divided into two processes based on how food is broken down: mechanical and chemical digestion.

really dont know just need some points

this protocol provides a detailed procedure for total protein extraction for western blot analysis from achieved samples following trizol isolation of rna.