Week 11: Biochemical tests and case study of impetigo caused by MRSA Flashcards
1
Q
positive glycerol fermentation test
A
yellow
2
Q
how does a glycerol fermentation test work?
A
if glycerol is fermented to produce acidic end products, the pH falls and the medium changes color
3
Q
positive VP test
A
Raymond Reddington is a + VIP
red
4
Q
negative VP test
A
Harold Cooper is a - VIP
copper
5
Q
positive indole test
A
red
6
Q
negative indole test
A
yellow
7
Q
variable indole test
A
orange
8
Q
positive citrate test
A
positive CItrate flies in the sky
royal blue
9
Q
negative citrate test
A
can’t see anything when you fly
no color change
10
Q
positive urease test
A
pink
11
Q
negative urease test
A
yellow
12
Q
TSI test: K
A
a red is not acidic
alkaline, red
13
Q
TSI test: A
A
an orange is acidic
acidic, orange
14
Q
K/K = ?
A
peptone utilized, no carbohydrates fermented
15
Q
K/A = ?
A
peptone utilized, only glucose fermented
