Explanation:proof reading is a process through which the mistakes that were made during the process of replication of DNA are corrected and if they are corrected after replication of DNA the process is called mismatch repair .
DNA Mismatch repair also called as MMR is a system for recognizing and repairing the DNA for unwanted insertion, deletion, and mis-incorporation of bases that can arise during DNA replication and recombination, as well as repairing some forms of DNA damage.
Carbohydrates covalently linked to proteins (glycoproteins) or lipids (glycolipids) are also a part of cell membranes, and function as adhesion and address loci for cells. The Fluid Mosaic Model describes membranes as a fluid lipid bilayer with floating proteins and carbohydrates.