Why is DNA considered an important molecule of life and what are the smaller sun-units (monomers)of DNA?

DNA is considered an important molecule of life because it carries the genetic information necessary for the growth, development, and functioning of all living organisms. It encodes the instructions for building proteins, which are crucial for various biological processes. The smaller sub-units (monomers) of DNA are nucleotides, each consisting of a sugar, a phosphate group, and a nitrogenous base. The sequence of these nucleotides determines the genetic code.