viruses are considered parasites (obligate parasites) because they cannot exist on their own. they need the host cell's machinery to reproduce so they cannot "survive" (technically not living) outside the cell.
This is from wikipedia:
In medicine, only eukaryotic organisms are considered parasites, with the exclusion of bacteria and viruses. Some branches of Biology, however, regard members of these groups (bacteria,viruses) as parasitic.
So some people regard viruses as parasites some don't.
They are probably considered parasites because a parasite benefits at the expense of the host.
Viruses do not have parasites....viruses are not living while parasites feed on living hosts. A virus behaves like a parasite as viruses need a living host to reproduce, but viruses can not have parasites
A virus is considered a parasite because it attaches to a cell and kills it.
Viruses, as well as parasites, destroy the cells they enter.
They feed off their hosts and do damage to them.
viruses are like parasites, organisms that live on or in a host and cause it harm.
viruses cannot survive/reproduce without a host. therefore, they are "obligated" to leech on another organism.
they aren't
They are called obligate intracellular parasites because they must use a host cell's amino acids to synthesize proteins, metabolic enzymes and pathways to obtain energy, ribosomes to synthesize proteins, and nucleotides for transcription and replication. In other words, they need to use just about everything from a host cell in order to survive.
Skin protects the inside of the body from bacteria. If it weren't for skin, we would get infections way too easily and certainly would not be able to survive. Not only just bacteria, but from viruses, parasites, and fungi too. A substance called melanin protects your skin from burns.
no bacteria is larger than viruses
viruses can be helpful because, some viruses can be used for cures. for example, USA. researcher suggest that adeno-associated viruses type 2 can Promises to be a breakthrough in cancer therapy
a virologist studies viruses
Parasites can carry and transmit viruses, but they do not "cause" them.
Viruses are cellular parasites.
Viruses
No; viruses are sub-Cellular 'virons', while parasites are frequently multi-cellular organisms.
Because they are obligate parasites
bacteria, viruses, fungi and parasites
They both destroy the cells that they attack.
bacteria, viruses, fungi and parasites
Immunity
Because viruses can not reproduce or produce protein without a host cell
no. . . Because parasites and viruses can only grow on living matters... There may be saprophytes and bacteria growing in your food. . . Even parasites and viruses can be there but can not grow. .
I wouldn't call bacteriophages parasites, but yes they are viruses which infect bacteria.