Term
| what techniques were used in the lab to isolate colonies? |
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Definition
| Streak plate, smear plate |
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Term
| what is the difference between the two methods of isolation? |
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Definition
| streak plate you drag the bacteria through different quadrants, minimizing the amount you drag each time through a new quadrant, resulting in isolated colonies. smear plate, dilute the bacteria, then smear on the agar. |
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Term
| what is a selective media |
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Definition
| a substance that does/doesnt allow one or more bacteria to grow |
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Term
| what is a differential media? |
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Definition
| something that distinguishes between different bacteria |
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Term
| what makes msa, emb, and mackonkey agar selective? |
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Definition
| salt, eosin y and methelyne blue dye, bile salts and crystal violet dye |
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Term
| what does msa, emb, and mackonkey agar select for? |
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Definition
| staphylococcus, gram -, gram - |
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Term
| what makes msa, emb, and mackonkey agar differentail? |
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Definition
| mannitol, lactose and sucrose, lactose |
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Term
| what does msa, emb, and mackonkey agar differentiate between? |
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Definition
| s. aureus, fecal coliform, enterobacteriaceae |
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Term
| what pH indicator is used in msa, emb, and mackonkey agar? |
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Definition
| phenol red, eosin y and methelyne blue, neutral red |
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Term
| what causes the indicator to change color? |
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Definition
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Term
| what is the Kerby Bauer Test used for? |
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Definition
| to find out which antibiotics are resistant/suseptible to which bacteria |
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Term
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Definition
| a substance that inhibits growth or kills a bacteria |
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