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26. In prokaryotes, transcription is
a. terminated by the stop codon
b. terminated by a protein called rho
c. terminated by a poly A sequence
d. terminated by a start codon
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Answer: (b).terminated by a protein called rho

27. In eukaryotes, there are three different RNA polymerases. The RNA polymerase responsible for transcription of mRNA is
a. RNA polymerase I
b. RNA polymerase II
c. RNA polymerase III
d. none of these
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Answer: (b).RNA polymerase II

28. The nucleons of eukaryotic cell has
a. RNA polymerase I
b. RNA polymerase II
c. RNA polymerase III
d. all of these
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Answer: (d).all of these

29. Upstream regions which are essential for correct transcription are called
a. enhancers
b. start codons
c. promoters
d. transcription factors
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Answer: (c).promoters

30. Transcription of each set of rRNA genes by RNA polymerasel produces
a. a single 45S rRNA precursor molecule
b. a single 5S rRNA precursor molecule
c. a single 18S rRNA precursor molecule
d. a single 28S rRNA precursor molecule
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Answer: (a).a single 45S rRNA precursor molecule

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