Difference Between Bacteria and Viruses
Bacteria and viruses both differ significantly. Major differences are as follows:
|Outer Cell Wall|
|The 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|
|Bacteria are large in size. The size ranges from 900-1000nm||Smaller in size. The size ranges from 30-50nm|
|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 independent reproduction||Host dependent reproduction|
|RNA and DNA|
|DNA or RNA is present in the cytoplasm||DNA or RNA are enveloped inside a protein coat known as a capsid|
|Generally localised infection, e.g. Pneumonia||Generally systemic, e.g. flu|
|Pneumonia, meningitis, food poisoning, typhoid, etc.||Common cold, polio, smallpox, hepatitis, AIDS, etc.|
|Antibiotics||Vaccines and antiviral drugs|
|Salmonella typheae, Vibrio cholerae, Staphylococcus aureus||Coronavirus, TMV, HIV, Hepatitis A, etc|
What is Bacteria?
Bacteria are prokaryotic microorganisms. They are found everywhere. They can survive even the harshest of conditions such as hot springs, deep ocean, snow, and even in the volcanos. Disease-causing bacteria are known as pathogens. Bacteria play a very important role in the ecosystem. They are widely used in the medical and agricultural industries.
What is a Virus?
Viruses are not fully acknowledged as living organisms as they cannot survive outside a host. Anatomically, a typical virus is girdled by a protein coat that is enclosed by a membrane made of proteins. In some viruses, this protein coat is covered by a lipid membrane called the viral envelope.