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Industrially Useful Microbial Processes

Industrially Useful Microbial Processes
The major organism used in the microbial production of citric acid is

Rhizopus nigrificins
Aspergillus niger
Lactobacillis delbrueckii
Penicillin notatum

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Industrially Useful Microbial Processes
Riboflavin is a by-product of __________ fermentation carried out by Clostridium spp.

citric acid
streptomycin
acetone butanol
ethanol

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Industrially Useful Microbial Processes
B. flavum strain can be used for the production of

L-Isoleucine and L-Histidine
All of these
L-Proline
L-Threonine

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Industrially Useful Microbial Processes
The aerated submerged bacterial fermentation to produce vitamin B12 employs strains of

Propionibacterium
both (a) and (b)
Acetobacter
Pseudomonas

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Industrially Useful Microbial Processes
It is mandatory that cultures and fermentation residues be sterilized before discard in case of Eremothecium ashbyii and Ashbya gossypii because they are

plant pathogens
none of these
human pathogens
plant mutants

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Industrially Useful Microbial Processes
Which of the following when used in proper concentration stimulates the Ascomycetes fermentation of vitamin B12 and can be used to counteract toxicity of iron in Candida species?

Co
Ni
Zn
Ca

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