Because viruses originated from a variety of host cells.
Not all living things can be affected by viruses; viruses are highly specific and typically infect particular hosts. Most viruses target specific types of cells, such as those found in animals, plants, fungi, or bacteria. For instance, bacteriophages are viruses that specifically infect bacteria, while other viruses may only infect certain animal or plant species. Therefore, while many organisms can be affected by viruses, others are resistant or immune to specific viral infections.
Yes, bacteria can be infected by viruses called bacteriophages. Bacteriophages are specific to infecting bacteria and can inject their genetic material into a bacterial cell, causing it to replicate and produce more viruses. This process eventually leads to the lysis, or bursting, of the bacterial cell, releasing more viruses to infect other bacteria.
Scientists have many theories. According to them, ozone was created by UV rays.
My biology book says: Hershey and Chase's experiment with bacteriophages confirmed Avery's results, convincing many scientists that DNA was the genetic material found in genes- not just in viruses and bacteria, but in all living cells. Hoped this helps :)
Viruses kill many hundreds of thousands of people each year. Because of the danger they pose to the population and because of their ability to adapt to new environments and treatments, viruses need to be constantly studied. Virologists, in conjunction with geneticists and biochemists attempt to culture specimens of viruses and to study their weaknesses. Some viruses (HIV) have been studied for several decades with no cure, but better understanding of their operation as a results. When scientists know more about how a virus works they can design better, more efficient treatments. Scientists have found cures (vaccines) to some viruses. Many of the influenza viruses have had vaccines developed for them including the most recent swine flu (H1N1).
There are many different types of scientists because one person could not handle all the information of geology, astrology, and other types of science. Since there are numerous types of sciences, there has to be many different types of scientists, so there are many different scientists because there are many different sciences.
Scientists do not know how many viruses there are because new ones are constantly being made from old ones joining.
Viruses have the ability to greatly affect life on earth. Many viruses, such as HIV and influenza have killed millions of people. By studying viruses, scientists are able to develop vaccines that will protect people (and animals) from viruses.
Some scientists are hoping that viruses can be modified to undo damage by other viruses, but there is no actual working "damage control" virus available as of July of 2013. Many scientists are concerned that even the good virus might have unwanted side effects.
I guess probably no one can answer this question .. There exists plenty of types of viruses and trust me a lot of viruses exist :)
There's so many here's a few:TrojanWormBloodhoundBeastThose are the most common and dangerous viruses.
There are thousands of different types of viruses that exist in the world. These viruses can infect various organisms including animals, plants, and bacteria. It is estimated that only a small fraction of all viruses have been identified and studied so far.
There are an estimated 320,000 mammalian viruses alone, and this number is constantly growing as new viruses are discovered. Viruses are diverse, constantly evolving, and have the ability to jump between different host species, making it challenging for scientists to accurately count and categorize all virus species. Additionally, many viruses remain undiscovered in the natural world.
because viruses change everyday a virus is made that we haven't found out about
because viruses change everyday a virus is made that we haven't found out about
There are thousands and the list grows almost daily.
viruses. All four of those Infectious Diseases are caused by viruses. Human Immunodeficiency Virus (HIV) is the name of the virus that causes AIDS. The common cold is usually caused by the rhinovirus (up to 40% of colds), or Coronaviruses (about 20%), but there are more than 200 viruses that can cause the common cold. Viruses also cause the flu, there are three types of human influenza viruses, Types A, B and C and many subtypes and strains of each of those types.