true
Viruses are the only non-biological infectious agents; all otheres are forms of pathogen, which are bacteria.
A virus is considered non-living. It does not have all the characteristics of a living thing unlike bacteria. Viruses need living cells to reproduce while any living things can reproduce (asexually or not).
No, cats cannot get distemper from dogs. Canine distemper virus specifically infects dogs and other members of the Canidae family, and does not affect cats. Cats are at risk for other diseases such as feline distemper (panleukopenia) or feline leukemia virus, but not distemper from dogs.
Distemper in cattle is caused by a virus. The virus is usually spread from animal to animal, the virus can originate in other animals and spread to cattle.
# Disable system restore (otherwise the virus will return) http://service1.symantec.com/SUPPORT/tsgeninfo.nsf/docid/2001111912274039?OpenDocument&src=sec_doc_nam # Start your PC in safe mode. do this by pressing F8 when the computer is starting up. # Run norton antivirus and it should be able to find and delete the virus # Restart the computer # Enable system restore
Viral Envelope
Virus' are not living - they cannot exist outside a living organism, and therefore cannot be classified in the same way as other organisms
No, viruses do not have the capacity to sense their environment or respond to stimuli in the way that living organisms can. They are simply genetic material that relies on host cells to replicate and spread.
no
They are hijackers. Once they get attached to the membrane of a living cell, they can take it over and "make" the living cell produce virus particles instead of cell parts. These particles can assemble into more viruses and then they break out of the cell (killing it) and begin the process again. They cannot make more viruses on their own. The do not respond to stimuli. If you could poke them, they would not respond. They do not reproduce on their own like a bacteria cell does. They do not absorb nutrients as living cells do.
No, viruses do not interact with their environment in the same way that living organisms do. They do not respond to stimuli or exhibit behavior. Viruses are simply infectious agents that require a host cell to replicate.
human immunodeficiency virus
No, it doesn't. This is one of the reasons scientists classify viruses as not living.
A stimulus causes your body to react, a response is something that is caused by a stimulus. Work it out, does the virus respond to you more or you to the virus?
No, a virus cannot have cells.
Yes, infection with HIV occurs by the transfer of blood, semen, vaginal fluid, pre-ejaculate or breast milk.
A virus outside a host cell is generally referred to as a virion. This is the inactive form of the virus that is unable to replicate until it enters a suitable host cell.