yes
yes it is
A host.
it is just is because it is still a living thing
no. it's called "Host".
A parasite is a thing that lives either within or on another living thing and uses the host's body to live.
A parasite is an organism that lives in or on another organism (the host) and benefits from the relationship at the expense of the host. Bacteria and viruses can both be parasites, depending on their interactions with the host organism.
no a scorpion is not a parasite a parasite is an organism that feeds off of a host which is a living thing this could be plant or animal scorpions do not feed off of a host a scorpion is an arachnid which is an animal with eight legs such as a spider, tick, mites and scorpions.
They don't have a Nucleus.
Bacteria. A virus is a non-living thing. Bacteria is a living thing.
not living and living because there is living organisms in water but if you consider living things bugs etc than no.
A virus or parasite that lives within an organism lacking a nucleus could infect a prokaryotic cell, such as a bacterium. In this case, the virus or parasite would utilize the host's cellular machinery to replicate and survive without the presence of a nucleus.
A flea is a parasite because it lives on another animal or living thing harming or irritating it with its presence.