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Across 1. A "fals foot" or temporary bulge of cytoplasm used for feeding and movement in some protozoans. (p. 470) 7. An animal-like protist. (p. 469) 9. An educated guess. An unproven idea, based on observation or reasoning, that can be proven or disproven through investigation. (notes) 13. The hairlike projections on the outside of cells that move in a wavelike manner. (p. 471) 14. The process by which cells break down simple food molecules to release the energy they contain. (p. 451) 16. The pattern of how a sickness is sperad out among a group of people. (notes) 18. The ability of bacteria to withstand the effects of an antibiotic. (p. 463) 21. A small, nonliving particle that invades and then reproduces inside a living cell.(p. 441) 23. An organism that lives on or in a host and causes harm to the host. (p. 441) 25. All the people in a particular group. (notes) 27. Something that helps to solve a problem or mystery. (notes) 30. An organism that makes its own food. (p. 409) 31. 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) 32. An organism whose cells lack a nucleus and some other cell structures. (p. 449) 33. An investigator who studies the occurance of disease in populations of people for the purpose of preventing or controlling health problems. (notes) 34. Single-celled organisms that lack a nucleus; prokaryote. (p. 449) 35. A small, rounded, thick-walled, resting cell that forms inside a bacterial cell. (p. 453) 36. A small grain-like structure in the cytoplasm of a cell. (p. 449)

Down 2. 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) 3. A eukaryotic organsim that cannot be classified as an animal, plant, or fungus. (p. 469) 4. Study of the distribution of a disease or other health-related condition. Basis for forming hypotheses. (notes) 5. The process in which a unicellular organism transfers some of its genetic material to another unicellualr organism. (p. 452) 6. A poisn reproduced by bacterial pathogens that damages cells. (p. 461) 8. A chemical that can kill bacteria without harming a person's cells. (p. 462) 10. A virus that infects bacteria. (p. 441) 11. An organism that provides a source of energy or suitable environment for a virus or for another organism to live. (p. 441) 12. The reproductive process that involves only one parent and produces off spring that are identicle to the parent. (p. 452) 15. A form of asexual reproduction in which one cell divides to form two identicle cells. (p. 452) 17. Someone who represents a group of people and their interests. (notes) 19. The cell structure that collects extra water from the cytoplasm and then expels it from the cell. (p. 470) 20. A disease caused by the presence of a living thing in the body. (p. 460) 22. An organism that cannot make its own food. (p. 409) 24. A substance introduced into the body to stimulate the production of chemicals that destroy specific viruses, bacteria, or other disease-causing organisms. (p. 465) 26. A long, whiplike structure used for movement that extends out through the cell membrane and cell wall. (p. 449) 27. The region between the cell membrane and the nucleus. (p. 449) 28. An organism that breaks down large chemicals from dead organisms into small chemicals and returns important materials to the soil and water. (p. 456) 29. A close relationship between two organisms in which at least one of the organisms benefits. ( p. 472)