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20 Cards in this Set
- Front
- Back
Growth Medium |
A liquid or gel designed to support the growth of microorganisms. |
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Nutrient Agar Plate |
A solid medium on flat surface. This is the best method to observe colony morphology (shape) and to work with individual colonies. Best for diagnostic methods. |
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Microscope |
A device used to magnify objects that are too small to be seen with the naked eye |
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Specimen |
Object being looked at |
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Ocular lens |
Eyepiece |
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Objective lens |
Lens closest to the specimen |
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Condenser |
Lens that concentrates the light for better resolution of the specimen |
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Iris diaphragm |
controls the amount of light |
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Rheostat |
controls intensity of light |
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Course Adjustment |
used for focusing with low power objective lens |
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Fine Adjustment |
used for focusing with high power and oil immersion lens |
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Parfocal |
specimen will remain in focus as you change the objective lenses |
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Resolution |
the ability of the lenses to reveal fine detail |
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Aseptic Technique |
procedure to prevent contamination of medium or bench surface |
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Inculcation |
act of transferring bacteria (and other microorganisms) onto culture medium |
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Contaminant |
Unwanted microbes present in culture medium or lab bench surface |
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Sterile Media |
media prepared and then sterilizedprior to use |
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Gram Stain |
differential stain used to classify Gram positive and negative bacteria
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Acid Fast Stain |
differential stain that detects acid-fast and non-acid fast organisms |
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Acid Fast Bacteria |
have a waxy cell wall (mycolicacid) that makes them difficult to stain with traditional methods. Also appear red/pink when stained. |