Viruses are neither prokaryotic nor eukaryotic. Viruses are in a separate category known as obligate intracellular parasites. By themselves, viruses do not carry the biological material necessary to reproduce; they can only replicate themselves by infecting prokaryotic or eukaryotic cells.Know More
A virus carries just enough genetic information to replicate itself inside prokaryotic or eukaryotic cells by hijacking the cell's internal reproduction mechanisms. Because viruses are smaller, simpler parasites, they often infect only a few species.
There is no known virus that can infect every animal on earth. For example, the Ebola Zaire virus is disastrous in humans, but the virus can be safely carried by its natural host, bats.Learn more about Biology
The smallest virus as of 2014 belongs to a group of viruses known as parvoviruses. These spherical viruses are about 18 nanometers in diameter and can only be seen through an electron microscope. To put that size in perspective, one nanometer is one-billionth of a meter.Full Answer >
A basic virus is composed of a genome, capsid and viral envelope. Viruses are acellular, non-living organisms. They are classified as obligate intracellular parasites, which require a host organism to function.Full Answer >
According to the UK's National Health Service, it's possible for a cold virus to survive outside the body for more than one week. Viruses last longer in indoor environments. However, after 24 hours, cold viruses start to become less infectious.Full Answer >
A virus that infects bacteria is called a bacteriophage, or simply a phage. Phages are composed of protein and nucleic acid, either DNA or RNA.Full Answer >