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You inoculate tubes of thioglycollate agar with a species of bacteria. There is no oxygen available in the bottom on the tube, while there is exposure to atmospheric concentrations of oxygen (~20%) at the very top of the tube. Describe, or draw, where in the tube you would expect the following types of microorganisms to grow: aerotolerant anaerobe, microaerophile, strict anaerobe, obligate aerobe and facultative anaerobe. B) Describe the function of the catalase and superoxide dismutase (SOD) enzymes. Which of the types of microorganisms listed in part A are most likely to have both catalase and SOD enzymes, and which is most likely to lack both catalase and SOD enzymes?

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