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Industrially Useful Microbial Processes

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
plant mutants
human pathogens

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Industrially Useful Microbial Processes
Which of the following is not an industrial product made by the fungus Aspergillus niger?

Citric acid
Lysine
Galactosidase
Gluconic acid

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Industrially Useful Microbial Processes
Bacitracin, an antibiotic similar to penicillin, is produced by

Aspergillus fumigatus
Streptomyces erythreus
Bacillus licheniformis
Bacillus polymyxa

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Industrially Useful Microbial Processes
β-carotene is also known as

provitamin A
vitamin A
vitamin C
vitamin D

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Industrially Useful Microbial Processes
The biotin level in obtaining L-gluatmic acid by fermentation using Micrococcus glutamicus is critical because

too high level prevents L-glutamic acid production
None of these
both (a) and (b)
too low level prevents growths, hence L-glutamic acid production

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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
Zn
Ca
Ni

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