Lab quiz 4 Flashcards
1
Q
what is a gram stain
A
result based on properties of cell wall
2
Q
what does gram positive look like
A
purple
3
Q
what does gram negative look like
A
red
4
Q
what is the procedure for a differential stain
A
crystal violet- 1 min
wash
iodine- 1 min
wash
alcohol- 5 sec
wash
safronin- 1 min
wash
blot
5
Q
what is the initial stain
A
crystal violet
6
Q
what is the mordant
A
iodine
7
Q
what is the decolorizer
A
alcohol
8
Q
what is the counter stain
A
safronin
9
Q
what would dead bacteria appear as
A
gram neg
10
Q
what do clumps appears as
A
gram pos
11
Q
what does too much alc appear as
A
gram neg
12
Q
what does too little alc appear as
A
gram pos
