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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
The organism which grows best above 45°C are called

mesosphilic
psychrophilic
any of these
thermophilic

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Growth and Nutrition of Bacteria
A culture broth tube was very turbid at the bottom of the tube but clear at the top of the tube indicating that the

organism cannot produce superoxide dismutase and/or catalase
broth is sterile
organism should be grown in an anaerobic chamber
organism can tolerate oxygen

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Growth and Nutrition of Bacteria
Bacteria and fungi multiply best

below 16°C
above 38°C
between 16-38°C
none of these

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Growth and Nutrition of Bacteria
What are the extrinsic factors for the microbial growth?

composition of gas phase
storage temperature
all of these
humidity

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Growth and Nutrition of Bacteria
Postgates assay technique is useful in determining if a cell is viable even though it is

an obligate aerobe
too small to see
a thermophile
incapable of cell division

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Growth and Nutrition of Bacteria
Which of the following is used to grow bacterial cultures continuously?

Petroff-Hausser chamber
Chemostat
Coulter Counter
Hemostat

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