Biotechnology - Ethanol Production

Exercise :: Ethanol Production - Section 1

  • Ethanol Production - Section 1
11. 

Which of the following microorganisms help in the ethanol production?

A. Saccharomyces cerevisiae
B. Zygomonas mobilis
C. Saccharomyces uvarum
D. All of these

Answer: Option D

Explanation:

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12. 

After the fermentation is over, ethanol is recovered by

A. centrifugation
B. distillation
C. filtration
D. cell disintegration

Answer: Option B

Explanation:

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13. 

The Zygomonas has a merit over yeast because

A. it has more osmotic tolerance to higher sugar concentration
B. it has high tolerance to ethanol
C. it has more specific growth rate
D. all of the above

Answer: Option D

Explanation:

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14. 

Which of the following organism is not used in any of the traditional industrial fermentation?

A. E. coli
B. Yeast
C. Bacillus
D. Pseudomonas

Answer: Option A

Explanation:

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15. 

How is air supply to the fermentor sterilized?

A. By heat filtration
B. Filtration through fibrous material
C. Filtration through granular material
D. All of the above

Answer: Option D

Explanation:

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