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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
Wright stain
B
Gram stain
C
Safranin red stain
D
Geimsa stain
2) What is the term for bacteria that are not harmful to humans.
A
non-pathogenic
B
pathogenic
C
non-social
D
anaerobic
3) What does the acetone or alcohol do in step three of the gram stain?
A
used as the primary stain
B
used as the mordant
C
decolorizes
D
used as the counter stain
4) The scientific name for round or oval shaped bacteria in chains
A
staphylobacilli
B
streptococci
C
streptobacilli
D
staphylococci
5) What is the general shape of the bacteria which causes Lyme's disease?
A
pallisades
B
cocci
C
bacillus
D
spirochete
6) An object without any microorganisms present is said to be _____?
A
contaminated
B
clean
C
sterile
D
disinfected
7) This microorganism has either DNA or RNA but never both
A
fungi
B
viruses
C
bacteria
D
parasite
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
Streptococci
B
Pseudomonas
C
E. coli
D
Klebsiella
10) The final step in the gram stain procedure that is used as a counter stain
A
acetone
B
crystal violet
C
iodine
D
safranin red
*select an answer for all questions
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