| A | B |
| animalcules | microorganisms described by Leeuwenhoek |
| anthrax | disease seen primarily in livestock |
| antibiotic | chemotherapeutic agent directed at bacteria or fungi |
| bacteria | prokaryotes |
| bubonic plague | disease known as the Black Death |
| cholera | disease that results in release of large amounts of "rice water stools" |
| colonies | progeny of a single bacterium forming a tight group in solid culture |
| cultivation | intentional and deliberate growth of microorganisms |
| diphtheria | serious respiratory infection characterized by tissue erosion |
| germ theory | idea that living organisms cause infectious disease |
| Koch's postulates | steps used to isolate the cause of an infectious disease |
| meningitis | inflammation of the tissue lining the brain and spinal cord |
| miasma | "foul vapor" thought to cause disease |
| microorganisms | living things that can only be seen with magnification |
| mold | threadlike form of fungus |
| pasteurization | a method of decreasing the bacterial population of foodstuffs |
| phagocytosis | nonspecific uptake of a large solid particle in a membranous vesicle by a cell |
| protists | single-celled eukaryotes |
| protozoa | animal-like single-celled eukaryotes |
| pure culture | specimen containing only one type of microbe |
| rabies | a viral neurodegenerative disease |
| smallpox | a viral disease characterized by numerous bumps on the skin |
| spontaneous generation | ability of formerly living tissue to spontaneously form into new organisms |
| tetanus | bacterial disease that causes muscle rigor |
| tsetse fly | vector for malaria |
| toxin | poisonous chemical made by a living organism |
| vaccine | mixture of antigens that stimulates immunity to specific microbes |
| virus | non-living infectious agent composed of protein and nucleic acid |
| yeast | single-celled fungi |
| yellow fever | disease spread by mosquitos in tropical areas |