|  | 1. | Two sub-types exist : facultative anaerobe and obligate anaerobe. 
 
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|  | 2. | Two sub-types exist : facultative anaerobe and obligate anaerobe. 
 
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|  | 3. | Some anaerobes react negatively or even die if oxygen is present. 
 
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|  | 4. | This is observable when facultative anaerobes are cultured in thioglycollate broth. 
 
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|  | 5. | Comparing to them, obligate anaerobes can be harmed by oxygen. 
 
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|  | 6. | Halanaerobiales are halophilic obligate anaerobes with a fermentative or homoacetogenic metabolism. 
 
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|  | 7. | Most respiring anaerobes are heterotrophs, although some do live autotrophically. 
 
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|  | 8. | It is an anaerobe, which means it cannot live near oxygen. 
 
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|  | 9. | The least common were infections caused exclusively by anaerobes and facultative organisms. 
 
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|  | 10. | They are obligate anaerobes and oxygen is toxic to them. 
 
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