Bio 2010 - Microbiology » Summer 2022 » Lab Quiz 4

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Question #1
The complete breakdown of blood on a blood agar plate is called
A.   γ hemolysis.
B.   β hemolysis.
C.   α hemolysis.
D.   ecophenotypic variation.
Question #2
This microbe is separated from other gram negative rods by a negative glucose fermentation test.
A.   Serratia marcescens
B.   Pseudomonas fluorescens
C.   Escherichia coli
D.   Enterobacter aerogenes
Question #3
Which of the following indicators is used to determine acid fermentation in a carbohydrate broth?
A.   phenol red
B.   neutral red
C.   iodine
D.   methyl red
Question #4
What is the function of a Durham tube?
A.   determine bile solubility in streptococci
B.   change color in the presence of the alkaline fermentation of carbohydrates
C.   determine the production of exoenzymes
D.   trap gas by-products of fermentation
Question #5
Which of the following media is not part of the IMViC series
A.   tryptic nitrate broth
B.   trypticase soy broth
C.   MRVP medium
D.   Simmons citrate agar
Question #6
The indole test is used to determine if a microbe has the ability to utilize
A.   tryptophan.
B.   lactose.
C.   sucrose.
D.   glucose.
Question #7
The methyl red and Voges-Proskauer tests are used to determine the way a microbe utilizes
A.   glucose.
B.   sucrose.
C.   mannitol.
D.   lactose.
Question #8
If an organism utilizes citric acid as a carbon source, it will turn Simmons citrate agar a __________ color.
A.   yellow
B.   green
C.   blue
D.   red
Question #9
Which of the following media can be used to inhibit the growth of Gram negative microbes?
A.   MacConkey agar
B.   Simmons citrate agar
C.   Columbia CNA agar
D.   blood agar
Question #10
__________ are Gram negative, lactose fermenting rods normally found in the gastrointestinal tracts of mammals.
A.   coliforms
B.   non-coliforms
C.   Streptococci
D.   mycobacteria

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