Viruses and Bacteria: What Sets Them Apart Kumar Jeetendra | November 10, 2023 Viruses and bacteria are both types of microorganisms, but they differ significantly in structure, function, and behavior. How are viruses different from bacteria at the apex? Cellular structure: Bacteria: If it wasn’t for bacteria causing problems, they’d be fascinating. These little single-celled organisms have a complex cellular structure. They come complete with a cell wall, …