Exercise: Growth And Nutrition Of Bacteria

Questions for: Growth And Nutrition Of Bacteria

Postgates assay technique is useful in determining if a cell is viable even though it is
A:
incapable of cell division
B:
too small to see
C:
an obligate aerobe
D:
a thermophile
Answer: A
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What is the primary source of food for marine life?
A:
Phytoplankton
B:
Zooplankton
C:
Sea weed
D:
Grass
Answer: A
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In the exponential phase, the cells and cell mass
A:
first increases then decreases
B:
decreases
C:
are constant
D:
double at a constant rate
Answer: D
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A culture broth tube was very turbid at the bottom of the tube but clear at the top of the tube indicating that the
A:
broth is sterile
B:
organism can tolerate oxygen
C:
organism cannot produce superoxide dismutase and/or catalase
D:
organism should be grown in an anaerobic chamber
Answer: C
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Exponential phase of growth curve of bacteria is of limited duration because of
A:
rise in cell density
B:
accumulation of toxic metabolites
C:
exhaustion of nutrients
D:
all of these
Answer: D
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