Biology Vocab

2. a tiny, nonliving particle that invades and then reproduces inside a living cell
4. animal that carries pathogens from person to person
8. capable of destroying or inhibiting the growth of disease-causing microorganisms
9. an infectious disease that can be transmitted or spread from one organism to another
11. whiplike structures used for movement in bacteria or protists
12. a person who has some pathogen to which he is immune but who can pass it on to others
14. organism that lives on or in a host and causes it harm
15. single-celled organism lacking a nucleus
17. tiny one-celled organisms that lack a nucleus, some of which can cause diseases
19. the struggle between individuals of the same or different species for food, space, light, etc.
20. The process by which cells obtain energy from glucose

1. organism whose cells contain nucleus
3. epidemic that spreads over a large area, or throughout the world
5. medicine that kills or slows the growth of bacteria
6. a symbiotic relationship in which one organism benefits and the other is harmed; example: dog and heartworms
7. any microbe (virus, bacteria, fungus or organism) that can cause a disease
10. substance prepared from killed or weaken viruses; given to help immunity from the virus.
13. outbreak of a disease that affects many people in an area
16. anything that causes a mutation or change in DNA
18. a trait that helps an organism survive in a particular environment