Viruses.(although they aren't completely clarified as living beings)
infection
A Virus must invade a host cell in order to reproduce. What people commonly mix up with them is bacteria which has no need to
Virus require a host to carry out the most of the characteristics of living organisms. In almost cases, viruses require a host to reproduce (by hijacking the cells of the host and using its DNA to make copies of itself) and also receive the bulk of their energy from the host.
A cell can be reproduce by a host cell
viruses can only reproduce in living cells by injecting their own dna into the nucleus
It is bacteria that can grow and reproduce without a live host
virus want to the enzymes of their host cell for grow and reproduction so it take many enzymes which want o the host cell.
host cells!
Infected cells are typically referred to as host cells that have been invaded by a virus, bacteria, or other microorganism.
true
Viruses that enter a cell do not die. A virus cannot reproduce on its own so it needs to find a cell in which to live. After the virus is done reproducing, most host cells die.
A microorganism that invades others cells is called a virus. Technically a virus is non-living. It uses the nucleus and its functions of its host cell to keep itself "alive".
The cells of the host's liver, spleen and the erythrocytes in the blood (where they reproduce).
Viruses do not grow because they are not alive. They can reproduce, but only inside a host cell.
Viruses must be produced in a host cell. They can be produced in vitro (in glass) if there are host cells in there first.
To find defenses against a eukaryotic microorganism is difficult because we are eukaryotic organisms and any attack on the cell of the microorganism can be an attack against our own cells. This requires a subtle approach. Viruses have no metabolism, are not really living and do not reproduce without a host. So, they leave little open to attack in their simplicity.
Host cells of viruses include human and other animals, and plants and fungi. Also bacteria and protozoa and algae are host cells of viruses.