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

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