Industrially Useful Microbial Processes – Section 1


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11. Alcohol production from starch and raw sugar utilizes selected strains of

A. Saccharomyces cerevisiae
B. Candida pseudotropicalis
C. Candida utilis
D. none of these

Correct Answer: A. Saccharomyces cerevisiae
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12. Fungal amylases using stationary culture with wheat bran utilizes

A. A. oryzae
B. A. niger
C. A. flavus
D. S. cerevisiae

Correct Answer: A. A. oryzae
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13. Why high concentrations of sugars are not employed in the fermentation medium?

A. Calcium lactate is not produced
B. Calcium lactate crystallizes from the medium and slows down the process of fermentation
C. High sugar concentration itself crystallizes
D. None of the above

Correct Answer: B. Calcium lactate crystallizes from the medium and slows down the process of fermentation
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14. Which of the following organism produces enzyme taka diastase?

A. A. oryzae
B. B. subtilis
C. A. niger
D. S. cerevisiae

Correct Answer: A. A. oryzae
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15. Which of the following is not an industrial product made by the fungus Aspergillus niger?

A. Galactosidase
B. Citric acid
C. Gluconic acid
D. Lysine

Correct Answer: D. Lysine
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