Life Science Terms 2 Learn #9 Bacteria and Viruses

pathogen

a virus, bacteria or other microorganism

that cause diseases

antibiotic

medicines used to kill bacteria

vaccine

substance put in to the body that will help

your immune system fight off a viral infections

virus

a microscopic particle; smaller than

bacteria; that invade cells to reproduce

host

an organism that a parasite lives on or in

parasite

an organism that lives on or in another

organism, feeding on it sometimes killing it

bioremediation

using bacteria and other microorganisms to eat pollution and make it less harmful

nitrogen fixing bacteria

bacteria in the soil that eat nitrogen in the

air and change it into a form plants can use

shapes of viruses

crystals, spheres, spacecraft, cylinders

shapes of bacteria

cocci(spherical), bacilli(rod shaped), spirilla(long spiral shaped)

cocci

baccillis

Spirillia

spherical virus

cylindrical virus

Bacteriaphage (spacecraft virus)

crystal shaped virus