Biochemistry - Transcription and Regulation - Discussion

Discussion :: Transcription and Regulation - Section 1 (Q.No.2)


RNA polymerase in prokaryotes has a removable

[A]. alpha subunit
[B]. beta subunit
[C]. both (a) and (b)
[D]. sigma subunit

Answer: Option D


No answer description available for this question.

Andrew said: (Jun 25, 2016)  
What is Sigma subunit?

Jay said: (Jul 16, 2018)  
Sigma subunit is a factor that attaches to rna-polymerase. Rna-polymerase cannot recognise promoter on DNA strand so sigma factor binds to rna-polymerase in order to attach properly to promoter region and cover all consensus sequence.

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