Are bacteria and viruses bound by a cell membrane or is it exclusive to one of them? Do bacteria and viruses have a nucleus or do only one of them have one?

Explanation:Lack membrane-bound organelles - While bacteria have a few organelles involves in metabolism and reproduction, they, like viruses, do not have membrane-bound organelles. In viruses, the nucleic acid is not contained in a nucleus as is the case with eukaryotic cells.