All cells contain DNA, which provides information for the cells to make proteins.
DNA (Deoxyribonucleic acid) is a biological macromolecule that contains hereditary instructions needed by the cells to make proteins and molecules that are important for organism’s growth and development. A protein is composed of a long chain of amino acids. Proteins produced by cells have many functions such as; enzymes (performing chemical reactions), transport proteins (carrying substances), structural proteins (building substances) and contraction proteins