Facts About Viruses and Bacteria
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Facts About Viruses and Bacteria

Viruses consist of genetic materials (DNA or RNA) surrounded by a protective coat of protein. Bacteria is plural for Bacterium and they exist everywhere, inside and on our bodies.

What are viruses?

Viruses are the smallest and simplest life form known. They are 10 to 100 times or even 10,000 smaller than bacteria that's why they can't be seen by the naked eye. The biggest difference between viruses and bacteria is that viruses must have a living host - like a plant or animal - to multiply, while most bacteria can grow on non-living surfaces.

Viruses consist of genetic materials (DNA or RNA) surrounded by a protective coat of protein called capsid. They are capable of latching onto cells and getting inside them. The cells of the mucous membranes, such as those lining the respiratory passages that we breathe through, are particularly open to virus attacks because they are not covered by protective skin.

According to the medics, virus is any wide variety of exceedingly small particles that causes different diseases. They are called filterable viruses because unlike bacteria, they pass through ordinary laboratory filters. Viruses occupy the borderline between living and nonliving things.

Many medical scientists believe that they are complex molecules of protein and nucleic acid, resembling genes. They show no lifelike activity, unless they are introduced into living cell. They cannot be grown in the laboratory on simple nutrient substances as bacteria can.

Once inside a cell, they undergo to the process of making copies of itself or reproducing. By changing the cell's chemistry the virus causes the cell to produce toxins. Specific viruses are responsible for a host of diseases such as the flu.

Today, we know what virus is, yet viral diseases of the world such as cancer, AIDS and Ebola, cannot be eradicated. Why? It is because no one knows how virus was born. Scientists and doctors are trying to find a definite cure for viral diseases and one of the most remarkable remedy or prevention is by vaccination. However, many new viruses are surfacing and affecting healthy people daily because discovery of new vaccine takes time and are still far from research and that no one in medical science has found the real origin of such diseases.

What are Bacteria?

Bacteria is plural for Bacterium. A bacterium is a microbe (a microscopic single cell organism) that can be found virtually anywhere; they are in air, the soil, and water, and in and on plants and animals. Unlike the virus, they are capable of multiplying by themselves, as they have the power to divide. Their shapes vary, and doctors use these characteristics to separate them into groups.

There are good and bad bacteria. They have useful functions like, making vitamins, break down garbage, and even maintain our atmosphere. The human mouth is home to more than 500 species of Bacteria. The more we know about Bacteria, the more we are able to figure out how to make microbes work for us or stop dangerous ones from causing serious harm.

Bacteria exist everywhere, inside and on our bodies. Most of them are completely harmless and some of them are very useful. But some bacteria can cause diseases, either because they end up in the wrong place in the body or simply because they are 'designed' to invade us.

Most bacteria can grow on non-living surfaces. There are some useful bacteria but all viruses are harmful. Antibiotics can kill bacteria but not viruses. An example of a disease caused by bacteria is strep throat. Disease-bearing bacteria produce poison called toxins against some of which medical science has developed antitoxins. Nowadays, most ailments caused by bacteria no longer pose a big problem to doctors around the world.


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Comments (2)

Interesting information..

very informative and useful article as usual.Thanks Aileen for sharing