““For people who study these domains, the difference is clear. Both the Bacteria and the Archaea do not have nuclei. Whereas, you and I do … in our cells. That’s why we are said to be Eukaryotes; it’s from Greek words meaning “having nut” (having nucleus). The Archaea and Bacteria are Prokaryotes, meaning “before nut” (before nucleus). This turns out to be of astonishing significance in the natural history of living things. The””