* Cells: All living cells, whether they are part of a multicellular organism (like humans) or single-celled organisms (like amoebas), contain DNA. DNA is the genetic blueprint that dictates the cell's function, development, and reproduction.

* Bacteria: Bacteria are single-celled organisms that also have DNA. However, their DNA is organized differently than in eukaryotic cells. Bacterial DNA is typically found in a circular molecule called a nucleoid, which is not enclosed within a membrane.

So, both cells and bacteria have DNA, but the way it is organized and packaged differs.