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Chapter 20
Chapter 20 Microbiology (Naomi Schutte-Smith)
Term | Definition |
---|---|
Bacilli | Bacteria that have a rod shape. |
Cocci | Bacteria that have a round shape. |
Colony | A mass of bacteria growing on a solid culture medium that have arisen from the multiplication of a single bacterium. |
Contagious | Capable of being transmitted directly or indirectly from one person to another. |
Culture | The propagation of a mass of microorganisms are grown in the culture medium. |
Culture Medium | A mixture of nutrients on which microorganisms are grown in the laboratory. |
False-negative | A test result denoting that a condition is absent when it is actually present. |
False-positive | A test result denoting that a condition is present when it is actually absent. |
Fastidious | Extremely delicate, difficult to culture, and involving specialized growth requirements. |
Immunization | The process of becoming protected from a disease through vaccination. |
Incubate | In microbiology, the act of placing a culture in a chamber that provides optimal growth requirements for the multiplication of the organisms, such as the proper temperature, humidity, and darkness. |
Incubation period | The interval of time between the invasion by a pathogenic microorganism and the appearance of first symptom of disease. |
Infectious disease | A disease caused by a pathogen that produces harmful effects on it's host. |
Inoculate | To introduce microorganisms into a culture medium for growth and multiplication. |
Microbiology | The study of microorganisms and their activities. |
Mucous Membrane | A membrane lining body passages or cavities that open to the outside. |
Normal flora | Harmless, nonpathogenic microorganisms that normally reside in many parts of the body but do not cause disease. |
Resistance | The natural ability of an organism to remain unaffected by harmful substances in its environment. |
Sequela | A morbid condition occurring as a result of a result of a less serious primary infection. |
Smear | Material spread on a slide for microscopic examination. |
Specimen | A small sample or part taken from the body to show the nature of the whole. |
Spirally | Bacteria that have a spiral or curved shape. |
Streaking | The process of inculating a culture to provide for the growth of colonies on the surface of a solid medium. Streaking is accomplished by skimming a wire inoculating loop that contains the specimen across the surface of the medium using a back/forth motion |
Sterptolysin | An exotoxin produced by beta-hemolytic streptococci, which completely hemolyzes red blood cells. |
Susceptible | Easily affected, lacking resistance. |