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Microbiology 1
Test Description: Microbiology, occult blood
Instructions: Answer all questions to get your test result.
1) What stain catergorizes bacteria according to the affinity of the bacteria's cell wall?
A
Safranin red stain
B
Gram stain
C
Geimsa stain
D
Wright stain
2) What is the term for bacteria that are not harmful to humans.
A
anaerobic
B
non-pathogenic
C
pathogenic
D
non-social
3) What does the acetone or alcohol do in step three of the gram stain?
A
used as the mordant
B
used as the counter stain
C
decolorizes
D
used as the primary stain
4) The scientific name for round or oval shaped bacteria in chains
A
staphylococci
B
staphylobacilli
C
streptococci
D
streptobacilli
5) What is the general shape of the bacteria which causes Lyme's disease?
A
pallisades
B
spirochete
C
bacillus
D
cocci
6) An object without any microorganisms present is said to be _____?
A
sterile
B
disinfected
C
contaminated
D
clean
7) This microorganism has either DNA or RNA but never both
A
bacteria
B
parasite
C
fungi
D
viruses
8) What color does a positive hemocult (guiac) turn?
A
red
B
blue
C
green
D
yellow
9) The microorganism most frequently responsible for urinary tract infections is _____
A
E. coli
B
Klebsiella
C
Streptococci
D
Pseudomonas
10) The final step in the gram stain procedure that is used as a counter stain
A
safranin red
B
iodine
C
acetone
D
crystal violet
*select an answer for all questions
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