MacConkey Agar Flashcards
1
Q
What is MacConkey Agar selective for?
A
Gram-negative bacteria
2
Q
What are the key ingredients in MacConkey Agar?
A
Lactose
Bile salts
Neutral red
Crystal violet
3
Q
Explain the differential properties of MacConkey Agar
A
Gram-negative lactose fermenters will turn a red/pink color. Non-lactose fermenters will stay the same color or become the color of the media
4
Q
How are MacConkey and EMB Agar similar?
A
They both are selective for gram-negative bacteria and differentiate based on lactose fermentation
