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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
An organism has an optimal growth rate when the hydrogen ion concentration is very high. This organism is

neutrophile
osmotolerant
aerotolerant anaerobe
acidophile

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Growth and Nutrition of Bacteria
Which of the following is the suitable temperature range for mesophiles?

20-30°C
25-40°C
None of these
>40°C

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Growth and Nutrition of Bacteria
Organisms, using organic compounds as electron donors are called

chemotrophs
organotrophs
lithotrophs
phototrophs

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Growth and Nutrition of Bacteria
What is the primary source of food for marine life?

Zooplankton
Grass
Phytoplankton
Sea weed

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Growth and Nutrition of Bacteria
A microbe, which grows at temperatures above 95° C is most likely to be

a protozoan
an archaean
none of these
a fungus

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Growth and Nutrition of Bacteria
Antimicrobial constituents for the microbial growth in foods are

intrinsic factor
extrinsic factor
none of these
both (a) and (b)

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