Discussion
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- Question
S cerevisiae start producing ethanol with in
Options- A. 10 h
- B. 12 h
- C. 15 h
- D. 24 h
- Correct Answer
- 12 h
- 1. To maintain aseptic conditions during fermentation which of the following is needed?
Options- A. Sterilization of fermentor
- B. Sterilization of air supply
- C. Aeration and agitation
- D. All of these Discuss
- 2. Which of the following is the word used to describe what happens when the nucleus of a sperm joins with the nucleus of an egg cell?
Options- A. Sex
- B. Fertilisation
- C. Intercourse
- D. Reproduction Discuss
- 3. When a fertilized egg cell develops into an embryo, the entropy of the living system
Options- A. decreases
- B. increases
- C. remains constant
- D. none of these Discuss
- 4. DNA into fish is injected into
Options- A. pronuclei
- B. cytoplasm
- C. both (a) and (b)
- D. none of these Discuss
- 5. Karyoplast is
Options- A. cells devoid of cell wall
- B. nuclei
- C. nuclei with only some residual plasma membrane
- D. cell with nucleus Discuss
- 6. Which of the following is used to check vortex and to improve aeration efficiency in a fermentor?
Options- A. Impeller
- B. Baffles
- C. Sparger
- D. All of these Discuss
- 7. As the fermentation for the ethanol production is over, the cells are separated to get the biomass of yeast cells that is used
Options- A. for next fermentation
- B. as single cell protein for animal feed
- C. as manure
- D. all of the above Discuss
- 8. Which of the following is used for aeration in a fermentor?
Options- A. Impeller
- B. Baffles
- C. Sparger
- D. All of these Discuss
- 9. What are the fermentation conditions for the ethanol production?
Options- A. pH 6; temperature 35°C
- B. pH 5; temperature 35°C
- C. pH 6; temperature 30°C
- D. pH 5; temperature 30°C Discuss
- 10. The Zygomonas has a merit over yeast because
Options- 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 Discuss
Ethanol Production problems
Search Results
Correct Answer: All of these
Correct Answer: Fertilisation
Correct Answer: decreases
Correct Answer: cytoplasm
Correct Answer: nuclei with only some residual plasma membrane
Correct Answer: Baffles
Correct Answer: as single cell protein for animal feed
Correct Answer: Sparger
Correct Answer: pH 5; temperature 35°C
Correct Answer: all of the above
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