The function of the proteins that are embedded in the cell membranes is to transport materials in and out of the cell. Proteins are large sized biomolecules that are also referred to as macromolecules at times. They are made up of large chains of amino acid molecules.
There are various different functions that proteins perform inside an organism such as DNA replication, transportation of molecules, and the growth and repair of the human cell themselves. The linear chain of amino acids that a protein is constituted of is called a polypeptide. They contain bonds that are called peptide linkages in them