1 What is a dichotomous key (strategy) and how is it used to identify microorganisms
2 Why is the Gram stain
often used as the first step to identify an unknown (what information is derived from the Gram stain resu)?
3What bacterial aerotolerances produce a positive catalase resu.
4 How is catalase detected in the catalase test? (state the reagent used to detect catalase AND what observation indicates a positive resu