External Resourses

John L's Bacteriology Pages - Oxygen Relationships
Good overview of the differences between aerobes, strict anaerobes, and facultative anaerobes. The discussion of differential media replicates almost exactly the type of situation that would frame an MCAT passage on this topic.

University of Texas Medical Branch - Anaerobes: General Characteristics
Great discussion of why oxygen is toxic to anaerobic bacteria. Advanced material but providing excellent insights.