Microbiology 020 - General Microbiology » Fall 2020 » Lab Quiz 9

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Question #1
All microorganisms require neutral pH and medium temperatures to survive.
A.   TRUE
B.   FALSE
Question #2
The slowed growth or lack of growth of an organism at temperatures or pH outside of its ideal range is most likely due to changes in its _______.
A.   cell wall
B.   bacterial chromosome
C.   enzymes and proteins
D.   capsule
Question #3
A microorganism that is harmed by the presence of oxygen and requires an oxygen-free environment is known as…
A.   a facultative anaerobe
B.   an obligate aerobe
C.   an obligate anaerobe
D.   an aerotolerant anaerobe
Question #4
The liquid medium that can be used to support the growth of both aerobes and anaerobes is known as…
A.   fluid thioglycollate medium
B.   two of these are correct
C.   anaerobe jar
D.   candle jar
Question #5
Some organisms, such as Serratia marcescens, can exhibit similar growth rates at different temperatures but express different phenotypic characteristics.
A.   FALSE
B.   TRUE
Question #6
Organisms that grow best in basic pH ranges are called _____.
A.   basophiles
B.   alkaliphiles
C.   neutrophiles
D.   acidophiles
Question #7
________ are organisms that survive in high sugar environments, causing spoilage of foods such as jams and jellies.
A.   alkaliphiles
B.   halotolerant
C.   neutrophiles
D.   osmophiles

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