Microbiology 020 - General Microbiology » Fall 2020 » Simple and Negative Stain
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Question #1
Smears are fixed by heat.
A.
TRUE
B.
FALSE
Question #2
Smear preparation is the same for liquid and solid cultures.
A.
FALSE
B.
TRUE
Question #3
________ is used for negative staining, _______ while is used for simple staining.
A.
basic dye, acidic dye,
B.
basic dye, neutral dye,
C.
acidic dye, basic dye
D.
neutral dye, acidic dye,
Question #4
Which of the following is (are) basic dyes ? Choose all that apply.,,
A.
nigrosine
B.
methylene blue
C.
crystal violet
D.
safranin
Question #5
What is the purpose of fixing the smear?
A.
to prevent it from discoloration
B.
to prevent it from breaking
C.
to prevent it from washing off
Question #6
What is the shape and arrangement of Staphylococcus aureus?
A.
triangular and clumped together
B.
spherical and lined together
C.
triangular and lined together
D.
spherical and clumped together
Question #7
Quality control staff in a sterilization unit of a hospital used a simple stain to determine whether bacteria present in sterilized materials. A simple stain of sterile saline used for respiratory therapy revealed the presence of bacteria. Is the saline contaminated?
A.
YES
B.
NO
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