Experiments Flashcards
1
Q
Mannitol Salt Agar
A
selects for gram positive, halophiles
differentiates for fermentation of mannitol (sugar alcohol)
yellow = pH change, acid pink = no pH
2
Q
Blood Agar
A
differential for streptococci that can hemolyse
beta- complete hemolysis
alpha - partial
gamma - no hemolysis
3
Q
MacConkey Test
A
selects for gram negative
differential for lactose fermenters vs non fermenters
yellow = ferment pink = no ferment
4
Q
Kirby Bauer Test
A
bacterial lawn with antibiotics.
zone of inhibition indicates resistance or susceptibility
5
Q
Catalase Test
A
differentiates if organisms have the enzyme catalase by adding peroxide
bubbling = catalase
