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20 Cards in this Set
- Front
- Back
Ubiquity |
present everywhere |
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Saprophytes |
Bacterial--> bacillus Fungal --> mold yeast Protozoan --> found in water |
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Saprophytes |
microbes in nature which breakdown decaying organic materials, recycle nutrients. |
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Commensals |
microbes that live on or in a organism that cause no harm with out any benefit. |
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Mutualists |
Microbes that live on or in anorganism where both the microbe and thehost benefit. |
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Obligate Pathogens |
Organisms that cause disease dueto their need to persist inside a host. |
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Mutualists |
Microbes that live on or in anorganism where both the microbe and thehost benefit. |
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Obligate pathogens |
organisms that cause disease due to their need to persist inside a host. |
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Opportunistic Pathogens |
Microbes that can cause diseaseunder proper conditions. This group can includesaprophytes, commensals, and mutualists |
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Culture |
group of microbes living together. |
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culture meduim |
nutrient material for the growth of microbes. |
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Media forms |
Solid--> use agar liquid semi-solid |
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Nutrient Agar |
used to culture most bacteria |
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Sabouraud's Dextrose Agar |
used to culture yeast and molds, prevents bacterial growth. |
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Colony |
Billionsof cells that originate from one parent cell. |
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Aseptic techniques |
Workarea disinfection. Sterilizingloops or needles before and after inoculations. Culturetube lip flaming before and after inoculations. CoveringPetri plates during inoculation. Workunder the flame of the Bunsen burner. |
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Autoclave |
Pressure, Heat, Time! Autoclaving uses heat and pressure. pressure allows rise in water temperature with out boiling. |
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Pure culture |
when all cells or a colony or culture are descendant of a single organism. |
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3 benefits of having a pure sample |
Macroscopic- colony morphology or cultural characteristics are species specific. Microscopic- cell morphology can be easily identified and is unaffected by other organisms. Physiological- test are true to the species being studied.
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3 things that isolated colonies can tell you |
isolate colony use isolated colony for pure sample determination if its pure describe colony morphology |