Viruses

Part one-
 1) The general structure of viruses are very small, they are approximately 15 - 25 nanometers in diameter. They are called nucleic acids and are in a protein shell or coat.

2) The genetic material that makes up the virus can be the following; Double stranded DNA, Double stranded RNA, single stranded DNA and Single stranded RNA. This genetic material is dependent on the type of virus and its nature it is also covered by a protein shell.

3)

 



4) Plant-  Polymyxa graminis is a species of plasmodiophorid protist. It is an obligate parasite of plant roots and though itself in non-pathogenic, it is responsible for the transmission of several very important plant viruses, including barley yellow mosaic virus and soil-borne wheat mosaic virus .

 

Animal- Rabies is a viral disease that causes acute encephalitis in warm-blooded animals.The disease is zoonotic, meaning it can be transmitted to humans from another species (such as dogs), commonly by a bite from an infected animal. For a human, rabies is almost invariably fatal if postexposure prophylaxis is not administered prior to the onset of severe symptoms. The rabies virus infects the central nervous system, ultimately causing disease in the brain and death.

 

5) I think viruses are very much alive. They spread for organism to organism and create diseases. These viruses can be killed with medicine and cures but when they are spreading and active I believe that they are alive.

 

6) Yes, there are viruses that kill bacteria and can be beneficial there are also bacteria (strains of E. coli) that live in our intestinal flora and metabolize Vitamin K₂ for us.