The Backbone of a DNA Molecule Is Made of Which Two Components?

The DNA molecule acts as an information storage medium for the cell. Information is stored in the sequence of four bases: adenine, guanine, cytosine and thymine. A base, a molecule of sugar and a phosphate group form a functional group called a nucleotide, which is a unit block for the molecule of DNA. DNA molecules are usually found in the cell nucleus; however, a smaller quantity is also found in the mitochondria.