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17 Cards in this Set
- Front
- Back
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superoxide dismutase |
2 O2 + 2H --> O2 + H2O2 |
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Catalase |
H2O2 --> H20 + O2 |
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two main pathways for heterotrophs |
aerobic respiration and fermentation |
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strict aerobes |
require O2 have SOD, catalase ex: Pseduomonas, Mycobacterium |
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Strict anaerobe |
killed by O2 lacks SOD, catalase fermentation ex Clostridium |
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Facultative anaerobe |
can survive with or without; better with O2 respiration or fermentation can be found in intestinal tract ex enteric family -> e. coli, klebsiella |
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aerotolerant anaerobe |
can tolerat O2, not killed by it no catalases or SOD fermentation |
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microaerophiles |
need lower conc. of O2 have SOD, catalase ex campylobacteria |
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most fungi uses |
aerobic respiration |
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most yeasts are... |
facultative |
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capnophiles |
grow better in increased levels of CO2 |
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thioglycollate is |
a reducing medium - contains no O2 |
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obligate aerobe |
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microaerophilic |
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falcutative anaerobe |
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aerotolerant |
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obligate anaerobe |
