Exercise: Growth And Nutrition Of Bacteria

Questions for: Growth And Nutrition Of Bacteria

An organism is completely dependent on atmospheric O2 for growth. This organism is
A:
osmotolerant
B:
acidophile
C:
facultative anaerobe
D:
obligate aerobe
Answer: D
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Which of the following organisms typically get their carbon for biosynthesis from organic compounds?
A:
Aerobic, glucose-respiring bacteria (aerobic respiration)
B:
Ammonia-oxidizing bacteria (chemolithotrophic bacteria)
C:
Photosynthetic cyanobacteria (phototrophic metabolism)
D:
None of the above
Answer: A
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Autotrophic bacteria are those which
A:
make their own food
B:
form a long chain glycocalyx
C:
are highly susceptible to penicillin
D:
produce a blue-green pigment
Answer: A
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The generation time of a culture that produces two generations per hour is
A:
greater than that produces three generations per hour
B:
lesser than that produces three generations per hour
C:
equal to that produces three generations per hour
D:
none of the above
Answer: A
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All organisms require at least small amounts of carbondioxide, However, some can use CO2 as their sole source of carbon. Such organisms are termed as
A:
autotrophs
B:
phototrophs
C:
chemotrophs
D:
photo-organotrophs
Answer: A
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