* DNA uses nucleotides, not amino acids: DNA is made up of nucleotides, not amino acids. Nucleotides are composed of a sugar (deoxyribose), a phosphate group, and one of four nitrogenous bases: adenine (A), guanine (G), cytosine (C), and thymine (T). These bases are arranged in specific sequences, forming the genetic code.

* Amino acids are used for building proteins: Amino acids are the building blocks of proteins, which carry out a wide variety of functions in living organisms. They are not involved in the storage of genetic information in DNA.

* RNA also uses nucleotides: RNA, another nucleic acid involved in protein synthesis, also uses nucleotides, but it uses uracil (U) instead of thymine (T).

In summary, all forms of life use nucleotides in DNA (and RNA) to store genetic information, not amino acids.