Micro Final Chap. 4
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Created by:
applecore92 on April 25, 2012
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micro
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12 terms
Terms | Definitions |
|---|---|
 mesophiles | optimum temperature is 25-35 degrees celsius; body temp & pathogens |
| psychotrophs | optimum temperature is 20-30 degrees celsius; refrigeration |
| obligate aerobes | only aerobic growth; O2 required |
| facultative anaerobes | both anaerobic & aerobic growth; ceases in presence of O2 |
| obligate anaerobes | only anaerobic growth; ceases in presence of O2 |
| aerotolerant anaerobes | only anaerobic growth, but continues in presence of O2 |
| microaerophiles | only aerobic growth; oxygen required in low concentration |
| catalase | converts H2O2 to H2O+O2 |
| peroxidase | converts H2O2 to H2O |
| superoxide dismutase | neutralizes superoxide to produce H2O2 & O2 |
| generation time | the amount of time it takes for bacteria population to double; Nt=NoX2n |
| bacterial growth curve | consists of a lag phase, log phase, stationary phase & death phase |
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