Consider the structure of dna within the cell, and the biological relevance of the structure DNA is associated with proteins in cells, both prokaryotes and eukaryotes even viruses Each dna and its associated proteins is called a chromosomeConsider the structure of DNA within the cell, and the biological relevance of the structure. ◼DNA is associated with proteins in cells, both prokaryotes and eukaryotes, even viruses ◼Each DNA and its associated proteins is called a chromosome