GNR Flashcards
1
Q
A
2
Q
Enterobacteriaceae
reactions common
A
MAC: LF or NLF
Reduces nitrates to nitrites: pos will appear red
* don’t perform oxidase test since it is a waste of time
3
Q
2 enzymes in LF
A
1) Permease
2) Beta-galactosidase
4
Q
ONPG test for
A
-Tests for beta-galactosidase
-if organism is a late lactose fermenter
5
Q
PDA Phenylalanine Deaminase
A
Contains phenylalanine, yeast extract, NaCl
Produces phenyl-lyruvic acid + ammonia
Add FeCl3 -> Green color
6
Q
MR test
A
produces strong acids through mixed acid fermentation. A pH indicator turns red when pos
7
Q
VP test
A
detects acetoin an end product of the butylene glycol pathway
40% KOH and alpha napthol > red color (pos)
8
Q
non-motile Enterobacteriaceae
A
SKY group
Serratia, Klebsiella, Yersinia
9
Q
A
