VIRUSES DOCUMENTARY.

VIRUSES DOCUMENTARY

1. According to what you´ve seen in the documentary make your own definition of a virus (use the concepts of the documentary).

A virus is a submicroscopic pathogen, poison. They are everywhere. They know how to enter in our bodies, and exactly how to affect our immune systems. They are very old, and their only goal is to reproduce.

Viruses are just a piece of genetic information  

2. What is a Bacteriophage? How does it reproduce?

Bacteriophage is a virus that attacks bacteria; the virus pushes its DNA trough the cell membrane from the bacteria;

3. How a virus spread among humans? What is a pandemic?

Humans’ cells work almost in the same way as bacteriophage; when these humans’ cells get damaged, people get sick. Pandemic is the worldwide spread of a new disease.

4. Tell about the origin of viruses.

Viruses are very old, many scientist say they attack the three domains of life (archaea, bacteria, and Eukarya), after knowing they were pieces of genetic material that could reproduce by infecting other organisms, they started to evolve into different types of viruses.

5. Is a retrovirus the same as a rotavirus?

The rotavirus is a waterborne microbe composed of RNA that kills approximately five million children a year. It attacks the lining of the small intestine which makes  severe diarrhea. While a retrovirus is a virus that is composed of RNA, but when it enters to a living cell, its genetic material converts into DNA; for example: AIDS.

6. What is the difference between RNA virus and DNA virus?

The DNA viruses, when they duplicate, they make identical copies of itself, so the vaccine works decade after decade. While RNA has frequent mutations, so that is why the vaccine is not that affective.

7. Explain one of the examples the video give about a virus, the explanation must be kind of virus, causes, main symptom, etc.

Mumps is a virus that passes from one person to another through saliva, nasal secretions or even contact. 
If you have been infected with mumps, you can rest when you feel tired, take pain relievers, drink a lot of water or fluids to avoid dehydration due to the fever, eat things you don’t have to chew a lot (it may be painful), etc.
You can prevent mumps by using vaccines, eventually the children between 12-15 months get their first doses;

8. How can you prevent Viruses?

Scientists can grow the virus in a laboratory, study them through time, and then develop a vaccine that could prevent the virus to attack our human cells (by the immune system to recognize it).

9.  Are you agree with the vaccination of people?

Yes, because It works in our immune system, when the virus injected by the vaccine enters to our body, the antibodies attaches to the virus cell membrane trying to destroy it, then the white cells come to destroy the virus, and after these, the body would recognize a virus once it enters again to our body.

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