VIRUSES AND BACTERIA

a chemical that can kill bacteria without harming a person’s cells

an illness that can pass from one organism to another

a widespread occurrence of an infectious disease in a community at a particular time

the ability to resist a virus

chemical used to kill bacteria

bacteria that depend on oxygen to survive

rod-shaped bacteria

a substance that stimulates the production of chemicals that destroy disease-causing organisms

an organism that provides a source of energy or environment for a virus to live

bacteria that do not require oxygen to survive

to make a person immune to a disease, usually through the use of a vaccine

sphere-shaped bacteria

a tiny, nonliving particle that invades and then reproduces inside a living cell

a disinfectant that can be safely used on humans

the process of breaking down food to release its energy

an organism that lives on or in a host and causes harm to the host

spiral-shaped bacteria

A virus that infects bacteria

an organism that breaks down dead organisms and returns them to the soil and water

the ability of bacteria to withstand the effects of an antibiotic

A single-celled organism that lacks a nucleus (a prokaryote)

a small, rounded, thick-walled, resting cell that forms inside of a bacterial cell

a poisonous substance, sometimes released in food spoiled by bacteria

a bacterium or virus that cause disease