What is the difference between bacteria and virus?

The main differences between bacteria and viruses are: 1. Structure: Bacteria are unicellular organisms with a cell membrane, cytoplasm, and DNA, whereas viruses consist of a protein coat (capsid) and genetic material (DNA or RNA) and lack cellular structures. 2. Reproduction: Bacteria reproduce asexually through binary fission, while viruses require a host cell to replicate. 3. Metabolism: Bacteria are metabolically active and can perform life processes on their own, while viruses depend on host cells to replicate and produce new viral particles.