The exact number of how many viruses exist in the world is not known because there have been some that have yet to be discovered. Also, many known viruses are also able to mutate into brand new viruses. This makes it next to impossible to get an exact count.
There are a number of different viruses with different descriptions in the world. Some cause very deadly diseases even though they are not living.
Virions are physical entities contain nucleocapsid ,capsid and sometime envelop. It exist extracellularly. Viruses are genetic material that occur intracellularly.
Viruses are made up of a strand of genetic material (either DNA or RNA) and sometimes have a protein coat protecting it. Viruses lack many of the components normally associated with cells such as a cell membrane and cytoplasm.
Viruses can effect our life by giving us a cold. But HIV, however, can kill us. Our immune system have lymphocytes that destroy viruses by using antibodies. Viruses tell the nucleus to make copies of the viruses. So many are made, the cell explodes. HIV destroy our lymphocytes. So we get weaker and weaker and then die.
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.
I guess probably no one can answer this question .. There exists plenty of types of viruses and trust me a lot of viruses exist :)
millions
thousands..
While most viruses co-exist harmlessly in their host and cause no signs or symptoms of disease, many of the viruses do cause fever.
4 billion celluar telephones exist in the world :)
120000000000
There are 15 species of old world vultures that exist and 7 species of new world vultures that exist. Turkey Vultures are the most common in the world.
Yes famine still exist in many parts of the world.
50% of the world has had viruses and has been hacked.
I believe, exogenous virus exist as: "replication competent viruses that are transmitted horizontally in mice, while endogenous viruses exist as germline sequences that are usually not replication competent by may recombine with exogenous viruses during the course of infection." This would refer to exogenous retroviruses.
One, your mom!
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