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Industrially Useful Microbial Processes

Industrially Useful Microbial Processes
The enzyme which converts optically active isomers of lactic acid to the optically inactive racemic mixture is

dehydrogenase
invertase
racemase
isomerase

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Industrially Useful Microbial Processes
The Candida species require fermentation equipment lined with plastic because they are extremely sensitive to

traces of iron
traces of cobalt
none of these
traces of nickel

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Industrially Useful Microbial Processes
Rickes et al. recovered active crystalline vitamin B12 from the culture of

Streptomyces griseus
Streptomyces olivaceus
Bacillus megaterium
Streptomyces lactis

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

Penicillin notatum
Lactobacillis delbrueckii
Aspergillus niger
Rhizopus nigrificins

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Industrially Useful Microbial Processes
The production of acetic acid from ethanol is an

None of these
aerobic process
anaerobic process
a combination of both

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Industrially Useful Microbial Processes
The maximum concentration of ethanol that is achieved by successive distillation of fermentation broth in continuous stills is

70%
60%
95%
99%

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