Difference Between Virus And Bacteria

Bacteria and viruses differ significantly. Major differences are as follows:

Bacteria	Virus
Outer Cell Wall
Bacterial cell wall is made up of peptidoglycan	Viruses do not contain a cell wall. The genetic material is enveloped by a protein coat known as a capsid
Size
Bacteria are large in size. The size ranges from 900 to 1000nm	Smaller in size. The size ranges from 30 to 50nm
Non-Living/Living
They are living organisms	They can replicate only within the host cell
Mode of Reproduction
Reproduce asexually by binary fission	Insert their genome in the host genome and make multiple copies
Host Dependence
Host independent reproduction	Host dependent reproduction
Ribosomes
Present	Absent
RNA and DNA
DNA or RNA is present in the cytoplasm	DNA or RNA are enveloped inside a protein coat known as a capsid
Infections
Generally localised infection, e.g. Pneumonia	Generally systemic, e.g. flu
Diseases
Pneumonia, meningitis, food poisoning, typhoid, etc.	Common cold, polio, smallpox, hepatitis, AIDS, etc.
Treatment
Antibiotics	Vaccines and antiviral drugs
Examples
Salmonella typheae, Vibrio cholerae, Staphylococcus aureus	Coronavirus, TMV, HIV, Hepatitis A, etc

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