Which characteristics do members of the Kingdoms Eubacteria and Archaebacteria share?

Members of the Kingdoms Eubacteria and Archaebacteria, collectively known as prokaryotes, share several key characteristics, including their unicellular structure and the absence of a membrane-bound nucleus. Both groups possess a single circular chromosome and reproduce asexually through binary fission. Additionally, they have cell walls, although the composition differs: Eubacteria typically have peptidoglycan, while Archaebacteria do not. Despite these similarities, they are genetically distinct and inhabit different environments.