Exercise: Growth And Nutrition Of Bacteria

Questions for: Growth And Nutrition Of Bacteria

Which of the following is the suitable temperature range for mesophiles?
A:
20-30°C
B:
25-40°C
C:
>40°C
D:
None of these
Answer: B
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Pseudomonas pseudoflava can grow as
A:
chemo-lithotrophs
B:
chemo-organotrophs
C:
both (a) and (b)
D:
none of these
Answer: C
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The microorganisms that grow best in a low-oxygen environment is called a (n)
A:
aerobe
B:
anaerobe
C:
facultative
D:
microaerophile
Answer: D
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The term facultative anaerobe refers to an organism that
A:
doesn't use oxygen but tolerates it
B:
is killed by oxygen
C:
uses oxygen when present or grows without oxygen when absent
D:
requires less oxygen than is present in air
Answer: C
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Generation time is
A:
time required for the population to double
B:
time required for the initial adjustment
C:
obtained by expression t/n, where t = time interval, n = number of generation
D:
both (a) and (c)
Answer: D
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