Àdàkọ:POTD/2008-03-02
| Àwòrán Ọjọ́ Òní | |
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A diagram of a simple prokaryote. Prokarya are one of the two domains of life, the other being Eukarya. They are characterized by having simple internal structures lacking cell nuclei. The domain Prokarya includes the kingdoms Bacteria and Archaea. Image credit: Mariana Ruiz |