&quot;Bacteria don&#x27;t have nuclei&quot; isn&#x27;t the same thing as eukaryotic cells not having nuclei, though, as they still are functional cells with genes. The point isn&#x27;t the presence or absence of a morphological feature, it is that eukaryotic cells lacking nuclei are hardly even cells, as they lack DNA entirely. As for the mitochondria, why would they be &quot;against&quot; bacteria? They are the enslaved proletariat of the bacterial kingdom! When the revolution comes, eukaryotes will be screwed.