| Term | Definition |
|---|
| Variations of Oxygen are reflections of the | diversity of natural environments microbes can be found in |
| Response to Oxygen is mainly | a function of the type of metabolism used by organisms, as well as the presence or absence of specific enzymes used to break down the toxic forms of oxygen |
| Toxic forms of Oxygen include | Free radicals and Peroxide |
| Oxygen enzymes include | catalyse and superoxide dismutase |
| Obligate Aerobes | require oxygen |
| Microaerophiles | require decreased O2 and increased CO2 |
| Anaerobes | cannot tolerate Oxygen |
| Facultative | with or w/o oxygen |
| Aerotolerant Anarobes | do not use Oxygen for growth;but tolerate its presence |
| Sodium Thioglycollate broth | contains the oxygen indicator Resazurin |
| Turns a pinkish color in the presence of Oxygen | Resazurin |
| Sodium Thioglycollate broth contains a pink layer on top where oxygen is present and | a amber or colorless in the middle and bottom where oxygen is absent |
| Commercially produced GasPaks contain | hydrogen and Palladium; WHICH CAN BE USED TO REMOVE ALL MOLECULAR OXYGEN AND CREATE ANAROBIC CONDITIONS |
| the oxygen indicator strip | is blue where oxygen is present; and white where oxygen is absent |
| control bacteria used of OXYGEN REQUIREMENTS | E.COLI/MICROCOCCUS LUTEUS, CLOSTRIDIUM SPOROGENES |
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