Term
Temperature class optima:
Psychrophiles
Mesophiles
Thermophiles
Hyperthermophiles |
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Definition
Psychrophiles (<15°C)
Mesophiles (15-45°C)
Thermophiles (>45°C)
Hyperthermophiles (>80°C) |
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Term
| Give an example of a bacteria from each temperature class |
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Definition
Psychrophile: Polaromonas vacuolata
Mesophile: Escherichia coli
Thermophile: Geobacillus stearothermophilus
Hyperthermophile: Thermococcus celer |
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Term
| Acidophiles have optimal growth at what pH? |
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Definition
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Term
| Alkaliphiles have optimal growth at what pH? |
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Definition
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Term
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Definition
| Water activity, ratio of vapor pressure of the air above solution to the vapor pressure of pure water |
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Term
| All microbes require... for growth and reproduction |
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Definition
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Term
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Definition
| organisms able to live in high concentrations of sugars |
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Term
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Definition
| organisms that can grow at high hydrostatic pressures |
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Term
| How do acids kill microbes? |
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Definition
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Term
| How do alcohols kill microbes? |
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Definition
| Denature proteins, extract lipids, dehydrate bacteria and viruses |
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Term
| How do aldehydes kill microbes? |
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Definition
| Disrupts membrane function |
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Term
| How do halogens kill microbes? |
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Definition
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Term
| How do disinfectants and soaps kill microbes? |
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Definition
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