Bio 2010 - Microbiology » Spring 2023 » 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.   ecophenotypic variation.
C.   α hemolysis.
D.   β hemolysis.
Question #2
This microbe is separated from other gram negative rods by a negative glucose fermentation test.
A.   Pseudomonas fluorescens
B.   Serratia marcescens
C.   Escherichia coli
D.   Enterobacter aerogenes
Question #3
Which of the following indicators is used to determine acid fermentation in a carbohydrate broth?
A.   methyl red
B.   iodine
C.   phenol red
D.   neutral red
Question #4
What is the function of a Durham tube?
A.   trap gas by-products of fermentation
B.   determine the production of exoenzymes
C.   change color in the presence of the alkaline fermentation of carbohydrates
D.   determine bile solubility in streptococci
Question #5
Which of the following media is not part of the IMViC series
A.   trypticase soy broth
B.   tryptic nitrate 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.   glucose.
B.   tryptophan.
C.   lactose.
D.   sucrose.
Question #7
The methyl red and Voges-Proskauer tests are used to determine the way a microbe utilizes
A.   glucose.
B.   lactose.
C.   mannitol.
D.   sucrose.
Question #8
If an organism utilizes citric acid as a carbon source, it will turn Simmons citrate agar a __________ color.
A.   green
B.   red
C.   blue
D.   yellow
Question #9
Which of the following media can be used to inhibit the growth of Gram negative microbes?
A.   blood agar
B.   Columbia CNA agar
C.   Simmons citrate agar
D.   MacConkey 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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