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- Question
Vinegar is typically produced in fed batch reactors because
Options- A. a fed batch reactor can be used to maintain low acetic acid concentrations
- B. a fed batch reactor can be used to maintain low ethanol concentrations
- C. acetic acid bacteria tend to ferment at high ethanol concentrations
- D. all of the above
- Correct Answer
- a fed batch reactor can be used to maintain low ethanol concentrations
- 1. P1 cloning vector is the example of
Options- A. plasmid
- B. cosmid
- C. bacteriophage
- D. phagemid Discuss
- 2. What is the concentration of CO2 required for culturing animal cells?
Options- A. 2-5%
- B. 1-10%
- C. 10-15%
- D. 15-20% Discuss
- 3. The cohesion-tension theory of water movement helps to explain how water moves from soil into root?
Options- A. Through the phloem
- B. From leaf to root
- C. Through the xylem
- D. Into the guard cells Discuss
- 4. The phenomenon of the reversion of mature cells to the meristematic state leading to the formation of callus is known as
Options- A. redifferentiation
- B. dedifferentiation
- C. either (a) or (b)
- D. none of these Discuss
- 5. Integrated octopine T DNA occurs as
Options- A. single segment
- B. two segments
- C. three segments
- D. four segments Discuss
- 6. Crown gall tissue
Options- A. can be cultivated in vitro in absence of bacteria
- B. retains tumorous properties when cultivated
- C. both (a) and (b)
- D. shows tumorous properties only in presence of bacteria Discuss
- 7. Vir genes required for the T-DNA transfer and processing are located
Options- A. on the T-DNA
- B. outside the T-DNA region
- C. on the plant genome
- D. none of these Discuss
- 8. If two genes show 50% recombination
Options- A. they are on different chromosomes
- B. they are on same chromosome but far apart
- C. both (a) and (b)
- D. they are closely located on the same chromosome Discuss
- 9. Yeast episomal plasmids (YEp) were constructed using
Options- A. 2?m yeast plasmid, fragments of yeast nuclear DNA and E coli vector pMB 9
- B. 2?m yeast plasmid, fragments of yeast nuclear DNA and E coli vector pBR 322
- C. 12?m yeast plasmid and E coli vector pMB 9
- D. 12?m yeast plasmid and E coli vector pBR 322 Discuss
- 10. Bock beer is prepared from
Options- A. roasted germinated barley seeds
- B. rice
- C. wheat
- D. grapes Discuss
More questions
Correct Answer: bacteriophage
Correct Answer: 1-10%
Correct Answer: Through the xylem
Correct Answer: dedifferentiation
Correct Answer: two segments
Correct Answer: both (a) and (b)
Correct Answer: outside the T-DNA region
Correct Answer: both (a) and (b)
Correct Answer: 2?m yeast plasmid, fragments of yeast nuclear DNA and E coli vector pMB 9
Correct Answer: roasted germinated barley seeds
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