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Industrially Useful Microbial Processes

Industrially Useful Microbial Processes
A major organism used in commercial bioleaching for copper recovery is

Aspergillus niger
Desulfovibrio desulfuricans
Pseudomonas aeruginosa
Thiobacillus ferrooxidans

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Industrially Useful Microbial Processes
Which of the following microorganism produces only L(+) - lactic acid without further racemization ?

Lactobacillus delbrueckii
Lactobacillus bulgaricus
Leuconostoc mesenteroides
Rhizopus oryzae

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Industrially Useful Microbial Processes
Species of the genus Streptomyces are known for

nitrification
the production of antibiotics
the production of beer
the production of cheese

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

Lysine
Citric acid
Gluconic acid
Galactosidase

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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 mutants
human pathogens
plant pathogens
none of these

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Industrially Useful Microbial Processes
β-carotene is also known as

vitamin A
vitamin D
vitamin C
provitamin A

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