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For each statement below regarding the process of transcription, indicate if it

ID: 179817 • Letter: F

Question

For each statement below regarding the process of transcription, indicate if it applies to

bacterial promoters (B), eukaryotic promoters (E), or all promoters (A).

A Pribnow box sequence is located about 10 nucleotides upstream from the transcriptional start site. -- B, E, Or A The sigma factor of RNA polymerase recognizes the promoter sequence.-- B, E, Or A A TATA box may be positioned upstream from the transcriptional start site.-- B, E, Or A A variety of transcription factors are necessary to initiate transcription.-- B, E, Or A RNA synthesis initiates at the promoter and is carried out in the 5’ to 3’ direction.-- B, E, Or A Both of the strands in double-stranded DNA contain promoter sequences and can serve as a template for RNA synthesis. -- B, E, Or A The RNA polymerase is modified as initiation transitions to elongation of transcription.-- B, E, Or A

Explanation / Answer

1. Pribnow box- TATAAT- part of promoter on DNA helps in transcription in Bacteria (B)

2.Sigma factor- occurs in bacteria and help in transcription initiation (B)

3. All promoters (A) - TATA box also known as goldberg hogness box found in both bacterial and eukaryotic promoters.

4. Eukaryotes Promoters (E)- Transcription is a complex process in a eukaryotic cells.

5. All Promoters (A) - In both prokarytoes and eukaryotes.

6. Eukaryotic promoters (E)

7. All Promoters (A)