1
What is the application (purpose) of MacConkey agar?
Used to isolate and differentiate members of the enterobacteriaceae based on the ability to ferment lactose.
2
What does carbon supply in the MCC agar?
____ supplies pancreatic digest of gelatin and casein in MCC agar
3
What does Nitrogen supply in the MCC agar?
____ supplies peptic digest of animal tissue
4
What are the roles of crystal violet and bile salts in MacConkey agar?
Inhibit the growth of gram positive bacteria
5
What are the roles of neutral red and lactose in MacConkey agar?
Neutral red is a pH indicator à COLORLESS: 6.8 +; RED: below 6.8
Lactose – fermented to produce acid end products which lower the pH and turn colonies pink-red