DNA
Inside eukaryotic cells, DNA is organized into chromosomes. Before cell division, more chromosomes are made in the process of DNA replication. Eukaryotic organisms like animals, plants, fungi and protists store most of their DNA inside the cell nucleus. But prokaryotes, like bacteria and archaea store their DNA only in the cytoplasm, in circular chromosomes. Inside eukaryotic chromosomes, chromatin proteins, such as histones, help to compact and organize DNA.