Virus vs Bacteria — Difference (with Table)
Virus vs Bacteria compared side by side — a 7-row comparison table and 4 key points. Class 9-12 Biology, free and no sign-up.
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TL;DR: Virus vs Bacteria compared side by side — a 7-row comparison table and 4 key points. Class 9-12 Biology, free and no sign-up.
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The main difference between Virus and Bacteria: Viruses are obligate intracellular parasites without cell structure, while bacteria are single-celled microorganisms with cell structure. Understanding the
Virus vs Bacteria — Comparison Table
| Basis | Virus | Bacteria |
|---|---|---|
| Cell structure | Not cells, have no cell membrane or organelles | Prokaryotic cells with cell wall and membrane |
| Size | Very small, 20-300 nanometers | Larger, 0.5-5 micrometers |
| Genetic material | DNA or RNA, never both | Double-stranded DNA |
| Reproduction | Only inside host cells | Independent reproduction by binary fission |
| Metabolism | No metabolism of their own | Have their own metabolism |
| Affect on hosts | Always parasitic, always harmful | Can be harmful or beneficial to humans |
| Examples | COVID-19, flu, measles, polio | E. coli, Streptococcus, Lactobacillus |
Key Points
- Viruses must use host cells for reproduction; bacteria can reproduce independently
- Bacteria have cell walls and organelles; viruses have no cellular structure
- Viral infections require antiviral drugs; bacterial infections treated with antibiotics
- Some bacteria are beneficial to humans; virtually all viruses are parasitic and harmful