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19 Cards in this Set
- Front
- Back
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Temperature has what stages |
Optimum, minimum, maximum |
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Changes in temperature can do what |
Eliminate characteristics, kill or slow bacterial growth |
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How can you see optimum growth |
By viewing tubridity |
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How is turbidity measured |
By absorbance using a spectrophotometer, measure how much light is absorbed |
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Optical density is |
The reading of light |
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Psychrophiles |
Freezing cold |
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Psychrotrophs |
Cold |
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Mesophiles |
Human temp |
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Thermoduric |
Mesophiles that can endure up to 70*C for a little while |
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Thermophiles |
Very hot |
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Extreme thermophiles |
Extremely hot |
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Water activity is used to |
Maintain turgor pressure, pH, and metabolic processes |
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1 is |
Pure water |
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Isotonic |
Equal movement of water in and out of the cell |
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Hypertonic |
Too much water leaving the cell |
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Hypotonic |
Too much water going into the cell |
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UV-C is |
The most damaging |
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Irregularly joined thymine bases are called |
Thymine dimers |
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Facultative anaerobes |
Use oxygen but DON'T require it and grow in its absence |
