15.  Which of the following proteins first binds to TATA box during transcription?
A.TF II A
B.TF II D
C.TF II B
D.RNA polymerase

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16. The components found in all prokaryotic transcription terminators is
A.a poly-U region
B.Rho factor
C.a hairpin structure
D.none of these

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17. A specific __________ factor helps RNA polymerase bind to late promoters and transcribe late genes.
A.sigma
B.beta
C.delta
D.gamma

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