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Vocabulary from text book


a virus that infects bacteria


an organism that lives inside or on another organism/host


a living thing that provides a source of energy for a virus or an organism


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

asexual reproduction

a reproductive process that involves only one parent and produces offspring that are identical to the parent


one-celled microorganisms, some of which are beneficial and some of which cause disease

binary fission

a form of asexual reproduction in which one cell divides to form two identical cells


an organism that breaks down chemicals from wastes and dead organisms, and returns important materials to the soil and water

Anton Leeuwenhoek

invented microscope looked at pond water called it animalcules

sexual reproduction

process in which genetic material from two parents combines and produces offspring that differ genetically from either parent


a thick-coated, resistant cell produced within a bacterial cell exposed to harsh conditions


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

infectious disease

a disease that is passed from one organism to another


a poison that can harm an organism


a substance that stimulates the body to produce chemicals that destroy viruses or bacteria

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