| A | B |
|---|
| infectious disease | diseases caused by pathogens |
| pathogen | any agent that causes disease |
| inflammatory response | rushing of your body's resources to an infected area |
| phagocyte | white cells that ingest and destroy pathogens and foreign matter |
| neutrophil | most abundant phagocyte circulating through the blood |
| macrophage | large phagocytes stationed in body tissues waiting for pathogens |
| natural killer cell | large white blood cells that attack and kill infected body cells |
| interferon | a protein released by cell infected with viruses that help other cells resist them |
| B cell | antibody secreting cells that originate and mature in the bone marrow |
| T cell | lymphocytes born of the bone marrow but mature in the thymus gland |
| antigen | non-self protein that causes antibodies to be made |
| antibody | protein made by B-cells in response to an antigen |
| memory B-cell | lymphocytes that remember a pathogen the second time they meet |
| immunity | the ability of your body to resist an infection by a pathogen |
| vaccination | harmless antigens from a viruse are introduced to initiate immunity |
| bacilli | rod shaped bacteria |
| cocci | sphere shaped bacteria |
| spirilla | spiral shaped bacteria |
| streptococci | strings of cocci bacteria |
| staphlococci | clumped cocci bacteria |
| Gram-positive | bacteria that stain blue or purple |
| Gram-negative | bacteria that stain pink or red |
| antibiotics | chemical agents that kill bacteria |
| endospore | tough coat made by some bacilli bacteria to resist extreme conditions |
| obligate aerobes | bacteria that must have oxygen or they die |
| facultative aerobes | bacteria that can live with or without oxygen |
| obligate anaerobes | live without air and are killed by oxygen |
| conjugation | bacteria of one type shares its genes with another type |
| prokaryote | bacteria without a nucleus or membrane bound organelles |
| antibiotic resistance | bacteria unable to be killed by antibiotics |
| virus | an infective particle with a capsid and nucleic acid strand |
| capsid | the protein surrounding viruses |
| lytic cycle | viral life cycle that infects cells and cause their death |
| lysogenic cycle | viral life cycle that infects a cell and the dna becomes part of the infected cell |
| prophage | viral DNA that combines with and reproduces with a host cell |
