Protist		The study of how and why diseases or other health-related conditions are distributed in a population the way they are, in other words, why some people get sick and others do not. (notes)
Stakeholder		An organism that provides a source of energy or suitable environment for a virus or for another organism to live. (p. 441)
Epidemiologist		Something that helps to solve a problem or mystery. (notes)
Symbiosis		A eukaryotic organsim that cannot be classified as an animal, plant, or fungus. (p. 469)
Asexual reproduction		The pattern of how a sickness is sperad out among a group of people. (notes)
Psuedopod		An organism whose cells lack a nucleus and some other cell structures. (p. 449)
Autotroph		Someone who represents a group of people and their interests. (notes)
Epidemiology		A long, whiplike structure used for movement that extends out through the cell membrane and cell wall. (p. 449)
Ribosome		Single-celled organisms that lack a nucleus; prokaryote. (p. 449)
Host		A heating process where food is heated to a temperature that is high enough to kill most harmful bacteria without changing the taste of the food. (p. 455)
Respiration		An investigator who studies the occurance of disease in populations of people for the purpose of preventing or controlling health problems. (notes)
Decomposer		An educated guess. An unproven idea, based on observation or reasoning, that can be proven or disproven through investigation. (notes)
Cytoplasm		A small, nonliving particle that invades and then reproduces inside a living cell.(p. 441)
Virus		A chemical that can kill bacteria without harming a person's cells. (p. 462)
Cila		The process in which a unicellular organism transfers some of its genetic material to another unicellualr organism. (p. 452)
Vaccine		An organism that makes its own food. (p. 409)
Disease distribution		An organism that lives on or in a host and causes harm to the host. (p. 441)
Population		The reproductive process that involves only one parent and produces off spring that are identicle to the parent. (p. 452)
Antibiotic		The process by which cells break down simple food molecules to release the energy they contain. (p. 451)
Hypothesis		The hairlike projections on the outside of cells that move in a wavelike manner. (p. 471)
Hetrotroph		All the people in a particular group. (notes)
Contractile vacuole		A disease caused by the presence of a living thing in the body. (p. 460)
Pasteurization		The cell structure that collects extra water from the cytoplasm and then expels it from the cell. (p. 470)
Flagellum		The ability of bacteria to withstand the effects of an antibiotic. (p. 463)
Bacteria		A poisn reproduced by bacterial pathogens that damages cells. (p. 461)
Binary fusion		An organism that breaks down large chemicals from dead organisms into small chemicals and returns important materials to the soil and water. (p. 456)
Prokaryote		An organism that cannot make its own food. (p. 409)
Antibiotic resistance		A form of asexual reproduction in which one cell divides to form two identicle cells. (p. 452)
Toxin		A substance introduced into the body to stimulate the production of chemicals that destroy specific viruses, bacteria, or other disease-causing organisms. (p. 465)
Endospore		A virus that infects bacteria. (p. 441)
Bacteriophage		An animal-like protist. (p. 469)
Clue		A small grain-like structure in the cytoplasm of a cell. (p. 449)
Infectious disease		A small, rounded, thick-walled, resting cell that forms inside a bacterial cell. (p. 453)
Descriptive epidemiology		A close relationship between two organisms in which at least one of the organisms benefits. ( p. 472)
Parasite		Study of the distribution of a disease or other health-related condition. Basis for forming hypotheses. (notes)
Protozoan		The region between the cell membrane and the nucleus. (p. 449)
Conjugation		A "fals foot" or temporary bulge of cytoplasm used for feeding and movement in some protozoans. (p. 470)