Viruses
Viruses.
Viruses cannot reproduce on their own. They must invade and infect other cells in order to be able to reproduce.
diseaes
pathogens
Pathogens
Viruses, bacteria, and so on are called germs, infective agents, microbes, pathogens and so forth.
name 3 organisms that invade bodies
The immune system plays an important role in the body's defence mechanisms. It destroys and eliminates the pathogens that invade our bodies.
It depends what sort of pathogen it is and what cells are infected but in general the infected cell is destroyed by lymphocytes and then engulfed by a phagocyte to get rid of what is left.
Viruses are not considered alive because they cannot reproduce on their own. They must invade another cell or bacteria and implant their genetic material into that organism's genome in order to replicate.
Antigens: BUT that is only true if the antigens cause a harmful reaction when they invade.
No. Viruses must invade a host cell and hijack its resources to replicate itself.
No. Viruses must invade a host cell and hijack its resources to replicate itself.