Vectors Uses for Animal Cell Culture – Section 1

31. 5-fluoro orotic acid inhibits the growth if one of the following markers is present in the yeast. That is

A. His 3
B. Lys 2
C. Ura 3
D. Trp 1

Correct Answer: C. Ura 3

32. Which of the following promoters is repressed in the presence of glucose?

A. Galactokinase (GAL 1)
B. Acid phosphatase (PHOS)
C. Both (a) and (b)
D. Phosphoglycerate kinase (PGK)

Correct Answer: A. Galactokinase (GAL 1)

33. Which of the following can be used for reducing the size of gene inserts containing introns?

A. Vaccinia virus
B. Baculo virus
C. Retrovirus
D. none of these

Correct Answer: C. Retrovirus

34. Bovine papillomavirus has a circular double-stranded DNA genome of about

A. 2.5 kb
B. 5.2 kb
C. 7.9 kb
D. 9.5 kb

Correct Answer: C. Retro virus

35. Retroviruses consist of

A. Ds DNA genome
B. Ss DNA genome
C. RNA genome
D. cDNA genome

Correct Answer: C. RNA genome

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