what is virus some examples of viruses
Answers
Answer:
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism.[1] Viruses can infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea.[2] Since Dmitri Ivanovsky's 1892 article describing a non-bacterial pathogen infecting tobacco plants, and the discovery of the tobacco mosaic virus by Martinus Beijerinck in 1898,[3] more than 6,000 virus species have been described in detail,[4] of the millions of types of viruses in the environment.[5] Viruses are found in almost every ecosystem on Earth and are the most numerous type of biological entity.[6][7] The study of viruses is known as virology, a subspeciality of microbiology.
Explanation:
Viruses are very small infectious agents. They are made up of a piece of genetic material, such as DNA or RNA, that is enclosed in a coat of protein.
Viruses invade cells in your body and use components of those cells to help them multiply. This process often damages or destroys infected cells.
A viral disease is any illness or health condition caused by a virus.
ex :- HIV , COVID 19 ,