The study of microscopic organisms
A small, nonliving particle that invades and then reproduces inside a living cell.
Single-celled organisms that lack a nucleus; prokaryotes
Coccus- a round or spherical shaped bacterium
Bacillus- a rod-shaped bacterium
Spirillum- a bacterium that has a spiral shape
Eukaryotic organisms that have cell walls, use spores to reproduce, and are heterotrophs that feed by absorbing food.
An organism that lives on or in a host and causes harm to the host
An organism that provides a sources of energy or a suitable environment for a virus or for another organism to live
A chemical that can kill bacteria without harming a person’s cells
Immunity in which antibodies are given to a person rather than produced within the person’s own body
Immunity that occurs when a person’s own immune system produces antibodies in response to the presence of a pathogen
A substance introduced into the body to stimulate the production of chemicals that destroy specific viruses, bacteria, or other disease-causing organisms
Vaccination-The process by which harmless antigens are deliberately introduced into a person’s body to produce active immunity
A disease caused by the presence of a living thing in the body
A disease that is not caused by a pathogen
A substance or a factor in the environment that can cause cancer
An outbreak of a disease that affects many people in an area
An epidemic that spreads over a large area, or throughout the world
An organism that transmits a disease. The organism does not cause the disease itself, but spreads infection by conveying pathogens from one host to another. Example-Mosquitoes are vectors for the deadly disease Malaria.
An organism that causes disease
A living thing that cannot be seen without a microscope
An agent, like a drug, that is destructive to or prevents the growth of microorganisms