Biochemistry - Transcription and Regulation

Exercise :: Transcription and Regulation - Section 1

  • Transcription and Regulation - Section 1
26. 

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

Answer: Option B

Explanation:

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27. 

The nucleons of eukaryotic cell has

A. RNA polymerase I
B. RNA polymerase II
C. RNA polymerase III
D. all of these

Answer: Option D

Explanation:

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28. 

Upstream regions which are essential for correct transcription are called

A. enhancers
B. start codons
C. promoters
D. transcription factors

Answer: Option C

Explanation:

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29. 

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

Answer: Option A

Explanation:

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30. 

The regions of a gene located at -10 and -35, with respect to the start of transcription, are termed

A. start codons.
B. oriC regions.
C. Shine Dalgarno sequences.
D. promoters.

Answer: Option D

Explanation:

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