Tinet Tip 5 months ago. Reply Upvote. Hey guys, I have the most epic idea to make a virus: Copy the following code in notepad: " echo off shutdown -r -t 00" save it as anyname. Tinet sertankarddezom Reply 5 months ago. Filipkingenp 4 years ago. Tinet Filipkingenp Reply 5 months ago. NicholasW4 7 years ago on Introduction. Divergence 7 years ago. Ryavco 7 years ago. And when I mean don't try it, I mean don't open the file yourself. You'll hate the results.
Millions dead kind of frightening. H5N1 influenza viruses—a. New Scientist reports that people are known to have caught the bird flu and died. But at Erasmus Medical Center in Rotterdam, the Netherlands, virologist Ron Fouchier has created an Avian flu that, unlike other H5N1 strains, easily spreads between ferrets—which have so far proven a reliable model for determining transmissibility in humans.
Are you scared yet? You have reason to be. Now Fouchier hopes to publish the results of experiments—first announced in September at a meeting of flu researchers in Malta—that many scientists believe should never have been done in the first place.
He and Yoshihiro Kawaoka, a virologist at the University of Wisconsin who is reportedly seeking to publish a similar study, have long pursued this line of research, hoping to determine whether H5N1 has the potential to become infectious in people, a jump that could trigger a worldwide pandemic.
About 8 percent of human DNA comes from viruses inserted into our genomes in the distant past, in many cases into the genomes of our pre-human ancestors millions of years ago.
Most of these viral genes come from retroviruses, RNA viruses that insert DNA copies of their own genes into our genomes when they infect cells. The DNA may be either double- or single-stranded.
Major groups of double-stranded DNA viruses class I viruses include the adenoviruses , the herpes viruses , and the poxviruses. Major groups of single-stranded DNA viruses class II viruses include the parvoviruses and coliphages.
Viruses occupy a special taxonomic position: they are not plants , animals , or prokaryotic bacteria single-cell organisms without defined nuclei , and they are generally placed in their own kingdom. There are two categories of viruses based on general composition. Viruses formed from only a nucleic acid and capsid are called naked viruses or nonenveloped viruses.
Viruses formed with a nucleic-acid packed capsid surrounded by a lipid layer are called enveloped viruses see Figure 4. Viruses are classified into four groups based on shape: filamentous, isometric or icosahedral , enveloped, and head and tail. Many viruses attach to their host cells to facilitate penetration of the cell membrane, allowing their replication inside the cell.
Prokaryotes include several kinds of microorganisms, such as bacteria and cyanobacteria. Viruses are considered neither prokaryotes nor eukaryotes because they lack the characteristics of living things, except the ability to replicate which they accomplish only in living cells. List the types of viruses In biology. Based on their host, viruses can be classified into three types , namely, animal viruses , plant viruses , and bacteriophages.
Install antivirus software. If you want to avoid getting a virus on your devices from the internet, installing and running antivirus software is important.
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