3-5 PL Quiz Flashcards
1
Q
solutions consisting of a solvent and a colored molecule
A
stains
2
Q
the colored molecule of a stain
A
chromogen
3
Q
the portion of the chromogen that gives it its color
A
chromophore
4
Q
the charged portion of a chromogen and allows it to act as a dye though ionic or covalent bonds between the chromogen and the cell
A
auxochrome
5
Q
these are attracted to the negative charges on the surface of most bacterial cells
A
basic stains
6
Q
what colors do the basic stains include
A
methylene blue, crystal violet, and safranin
7
Q
what does heat fixing do
A
kills bacteria, makes them adhere to the slide, and coagulates cytoplasmic proteins(more visible)
