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10 Cards in this Set
- Front
- Back
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Hanging drop preparations are especially good for determining:
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Motility
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An organism that retains the crystal violet-iodine complex even when rinsed with acetone-alcohol or some corresponding decolorizer is:
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Gram positive
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Gram-positive bacteria generally:
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Have low lipid content in their cells (~1%)
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You obtain a clean slide, put a drop of water on it, scrape some tissue off your cheek, dab it in the water and put a cover on it. You have just prepared what is known as a:
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Wet Mount
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A gram-positive organism is distinguished from a gram-negative organism by:
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taking up the blue stain and resisting decolorization
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The acid fast stain is used for identification of:
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tuberculosis
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The correct order of adding reagents in a gram stain is:
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crystal violet, grams iodine, acetone/alcohol, safranin
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When properly stained, gram-positive cells turn:
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Purple
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The gram stain is a:
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differential stain
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What is the most critical step in the gram-stain?
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decolorization
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