1. Describe the importance of using a Mannitol Salt agar medium?  Which class of medium it belongs to? 

2. List components of the Mannitol medium.  Include specific role/use of each component of the medium

3. Explain the interpretation of your MSA plate results providing clear biochemical explanations 

4. Do you observe any difference between S.aureus and S epidermidis colonies on nutrient agar plate? 

5. What is the blood agar medium. Name 2 bacteria that are differentiated using this media. How are they differentiated? 

6. What are hemolysins?   Identify the 3 hemolysins.  What is the source of RBCs in blood agar?

7. What is the oxidase test? It’s significant in a clinical setting.