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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

none of these
plant pathogens
human pathogens
plant mutants

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Industrially Useful Microbial Processes
Which of the following is a heterofermentative micro-organism?

Lactobacillus bulgaricus
Lactobacillus delbrueckii
Leuconostoc mesenteroides
Lactobacillus pentose

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Industrially Useful Microbial Processes
Which of the following substance is employed to neutralize the lactic acid as it is produced (because lactic acid bacteria do not tolerate high concentrations of acid?

Na2SO4
(NH4)2 HPO4
MgSO4
CaCO3

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

Rhizopus oryzae
Lactobacillus bulgaricus
Lactobacillus delbrueckii
Leuconostoc mesenteroides

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Industrially Useful Microbial Processes
The first penicillin isolated by Alexander Fleming, penicillin F is also called

benzyl penicillin
2-Pentenyl Penicillin
n-heptyl penicillin
phenoxymethyl penicillin

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

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

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