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MCQs

Total Questions : 238 | Page 20 of 24 pages
Question 191. Which of the following are produced in high copy number?
  1.    Both (a) and (b)
  2.    YRp
  3.    YCp
  4.    YEp
 Discuss Question
Answer: Option A. -> Both (a) and (b)
Question 192. Which of the following(s) is/are the most commonly used markers in yeast?
  1.    His 3
  2.    All of these
  3.    Trp 1
  4.    Ura 3
 Discuss Question
Answer: Option B. -> All of these
Question 193. SV 40 vectors, in which late region replacements are done, require
  1.    none of these
  2.    SV 40 helper virus
  3.    pBR 322 vector
  4.    COS cell line
 Discuss Question
Answer: Option B. -> SV 40 helper virus
Question 194. Retroviruses consist of
  1.    cDNA genome
  2.    Ss DNA genome
  3.    RNA genome
  4.    Ds DNA genome
 Discuss Question
Answer: Option C. -> RNA genome
Question 195. Bovine papilloma virus has a circular double stranded DNA genome of about
  1.    9.5 kb
  2.    7.9 kb
  3.    5.2 kb
  4.    2.5 kb
 Discuss Question
Answer: Option B. -> 7.9 kb
Question 196. 5-fluoro orotic acid inhibits the growth if one of the following marker is present in the yeast. That is
  1.    Trp 1
  2.    Ura 3
  3.    His 3
  4.    Lys 2
 Discuss Question
Answer: Option B. -> Ura 3
Question 197. Which of the following promoters is repressed in presence of glucose?
  1.    Acid phosphatase (PHOS)
  2.    Phosphoglycerate kinase (PGK)
  3.    Galactokinase (GAL 1)
  4.    Both (a) and (b)
 Discuss Question
Answer: Option C. -> Galactokinase (GAL 1)
Question 198. Which of the following can be used for reducing the size of gene inserts containing introns?
  1.    Retro virus
  2.    Vaccinia virus
  3.    none of these
  4.    Baculo virus
 Discuss Question
Answer: Option A. -> Retro virus
Question 199.  For culturing, plasma from the adult chicken is preferred to mammalian plasma because
  1.    it forms a clear and solid coagulum even after dilution
  2.    it is too opaque
  3.    it doesn't produce solid clots
  4.    it forms a semi solid coagulum
 Discuss Question
Answer: Option A. -> it forms a clear and solid coagulum even after dilution
Question 200.  
When dissolved oxygen is lower than the critical concentration, viable cell concentration declines because of
  1.    incomplete glutamine oxidation
  2.    increase in specific lactate production from glucose
  3.    both (a) and (b)
  4.    accumulation of ammonia
 Discuss Question
Answer: Option C. -> both (a) and (b)

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