Exercise: Growth And Nutrition Of Bacteria

Questions for: Growth And Nutrition Of Bacteria

The fragmentation occurs in
A:
Streptomyces species
B:
Nocardia species
C:
Bacillus subtilis
D:
None of these
Answer: B
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The term obligate 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 oxygen is absent
D:
prefers to grow without oxygen
Answer: B
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The term aerotolerant anaerobe refers to an organism that
A:
doesn't use oxygen but can grow in the presence of oxygen
B:
is killed by oxygen
C:
requires less oxygen than is present in air
D:
prefers to grow without oxygen
Answer: A
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The period between inoculation of bacteria in a culture medium and beginning of multiplication is known as
A:
stationary phase
B:
log phase
C:
lag phase
D:
decline phase
Answer: C
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Microaerophilic bacteria are those which require
A:
21 % oxygen for growth
B:
low levels of oxygen for growth (lesser than O2 present in atmosphere)
C:
oxygen for activation of enzymes
D:
none of the above
Answer: B
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