Question

1.
The first step in identification of an unknown would be a(n)
a.
Gram stain
b.
Preparation of a stock slant
c.
Streak plate preparation
d.
Incubation of fluid thioglycollate broth
2.
A pure colony is best defined as a(n)
a.
well isolated mass of cells
b.
well isolated mass of cells all derived from a single cell
c.
mass of cells ranging in size and pigment
d.
isolated mass of cells that have the same appearance on an agar plate

3.
If you performed a Gram stain on a Gram negative bacterium and forgot to add the
saffranin, what color would the cells be?
a.
dark purple
b.
pink
c.
no color
d.
blue

Answer 1