PreQuiz (See related pages) 1 Obligate anaerobes cannot tolerate any free oxygen in the environment and will die if exposed to free oxygen. A) True B) False 2 When no oxygen is available the methylene blue indicator strip in an anaerobe jar appears ______. A) blue B) colorless 3 Oxygen within an anaerobe jar is converted to _______, creating an anaerobic environment. A) carbon dioxide B) water C) methylene blue D) palladium 4 Which phase of Clostridium botulinum produces botulin? A) Endospores B) Vegetative cells 5 Clostridium botulinum endospores that have not germinated are generally not harmful. A) True B) False
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