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.   ecophenotypic variation.
C.   γ hemolysis.
D.   β hemolysis.
Question #2
This microbe is separated from other gram negative rods by a negative glucose fermentation test.
A.   Escherichia coli
B.   Serratia marcescens
C.   Enterobacter aerogenes
D.   Pseudomonas fluorescens
Question #3
Which of the following indicators is used to determine acid fermentation in a carbohydrate broth?
A.   methyl red
B.   neutral red
C.   iodine
D.   phenol 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.   MRVP medium
B.   Simmons citrate agar
C.   tryptic nitrate broth
D.   trypticase soy broth
Question #6
The indole test is used to determine if a microbe has the ability to utilize
A.   sucrose.
B.   glucose.
C.   lactose.
D.   tryptophan.
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.   green
B.   blue
C.   yellow
D.   red
Question #9
Which of the following media can be used to inhibit the growth of Gram negative microbes?
A.   Columbia CNA agar
B.   Simmons citrate agar
C.   blood agar
D.   MacConkey agar
Question #10
__________ are Gram negative, lactose fermenting rods normally found in the gastrointestinal tracts of mammals.
A.   Streptococci
B.   mycobacteria
C.   non-coliforms
D.   coliforms

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