What is Virus 🦠 ? What is DNA & RNA ? | Basic to Advance in Hindi

What is Virus 🦠 ? What is DNA & RNA ? | Basic to Advance in Hindi

▶️What is Biology ? What is Life ? जीव विज्ञान क्या है?जिंदगी क्या है ? Characteristics of life

A virus is a microscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all types of life forms from animals and plants to bacteria and archaea.

Viruses are much smaller than bacteria and are even smaller than most cells. They are made up of a simple structure:

Genetic material (either DNA or RNA)
A protein coat that protects the genetic material
Some viruses also have an outer envelope made of lipids (fats).

Viruses cannot reproduce on their own. They invade host cells and use the host cell's machinery to make copies of themselves. This can damage the host cell and cause illness.

Here are some examples of viruses:

Influenza virus: This virus causes the flu.
Rhinovirus: This virus is a common cause of the common cold.
HIV: This virus causes AIDS.
Herpes simplex virus: This virus causes cold sores and genital herpes.
Hepatitis B virus: This virus can cause liver damage.
Image of Herpes simplex virusOpens in a new window

How do viruses spread?

Viruses can spread in a number of ways, including:

Through the air: When an infected person coughs or sneezes, they can expel virus particles into the air. These particles can be inhaled by other people who are then infected.
Through contact with an infected person: Viruses can spread through contact with bodily fluids such as saliva, mucus, or blood. This can happen through kissing, sharing utensils, or touching an infected person's skin.
Through contact with a contaminated surface: Viruses can live on surfaces for a period of time. If a person touches a contaminated surface and then touches their face, they can become infected.
How can you prevent the spread of viruses?

There are a number of things you can do to prevent the spread of viruses, including:

Washing your hands frequently with soap and water
Avoiding close contact with people who are sick
Covering your mouth and nose with a tissue when you cough or sneeze
Disinfecting surfaces that may be contaminated with viruses

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What is Virus?
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