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MCQs

Total Questions : 195 | Page 2 of 20 pages
Question 11. How many DNA molecules are transferred after each transformation?
  1.    2
  2.    1
  3.    50
  4.    infinite
 Discuss Question
Answer: Option B. -> 1
Answer: (b).1
Question 12. Which of the following enzymes acts on the DNA after its entry into the cell?
  1.    ligases
  2.    endonucleases
  3.    deoxyribonucleases
  4.    exonucleases
 Discuss Question
Answer: Option C. -> deoxyribonucleases
Answer: (c).deoxyribonucleases
Question 13. Which among the following species have not been transformed?
  1.    Bacillus
  2.    Neisseria
  3.    Rhizobium
  4.    Aspergillus
 Discuss Question
Answer: Option D. -> Aspergillus
Answer: (d).Aspergillus
Question 14. The DNA uptake process does not require any energy.
  1.    True
  2.    False
  3.    May be
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 15. In which phase of growth does the recipient cell takes up the donor DNA?
  1.    lag phase
  2.    early logarithmic phage
  3.    late logarithmic phage
  4.    stationary phage
 Discuss Question
Answer: Option C. -> late logarithmic phage
Answer: (c).late logarithmic phage
Question 16. The strain C. glutamicum can be used for the production of
  1.    L-ornithine
  2.    L-phenylalanine
  3.    L-glutamine
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 17. The maximum concentration of ethanol that is achieved by successive distillation of fermentation broth in continuous stills is
  1.    60%
  2.    95%
  3.    70%
  4.    99%
 Discuss Question
Answer: Option B. -> 95%
Answer: (b).95%
Question 18. Species of the genus Streptomyces are known for
  1.    the production of antibiotics
  2.    the production of beer
  3.    the production of cheese
  4.    nitrification
 Discuss Question
Answer: Option A. -> the production of antibiotics
Answer: (a).the production of antibiotics
Question 19. The organism used to produce L-glutamic acid is
  1.    Micrococcus glutamicus
  2.    Brevibacterium aminogenes
  3.    Arthrobacter globiformis
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 20. Which of the following is known for greater stability of the riboflavin producing capacity?
  1.    Eremothecium ashbyii
  2.    Ashbya gossypii
  3.    Candida flareri
  4.    None of these
 Discuss Question
Answer: Option B. -> Ashbya gossypii
Answer: (b).Ashbya gossypii

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