Discussion
Home ‣ Biochemistry ‣ Transcription and Regulation Comments
- Question
In eukaryotes, there are three different RNA polymerases. The RNA polymerase responsible for transcription of mRNA is
Options- A. RNA polymerase I
- B. RNA polymerase II
- C. RNA polymerase III
- D. none of these
- Correct Answer
- RNA polymerase II
- 1. The regions of a gene located at -10 and -35, with respect to the start of transcription, are termed
Options- A. start codons.
- B. oriC regions.
- C. Shine Dalgarno sequences.
- D. promoters. Discuss
- 2. Promoters for tRNAs are located
Options- A. upstream from the start codon
- B. downstream from the start codon
- C. both (a) and (b)
- D. none of these Discuss
- 3. RNA polymerase holoenzyme initiates transcription which involves
Options- A. recognition of the -10 sequence and -35 sequence
- B. recognition of the -10 sequence only
- C. recognition of the -35 sequence only
- D. none of the above Discuss
- 4. What is a promoter?
Options- A. A specific sequence of DNA to which a catabolic repressor binds
- B. A specific sequence of DNA to which RNA polymerase binds
- C. A specific DNA sequence to which a restriction endonuclease binds
- D. None of the above Discuss
- 5. In both eukaryotes and prokaryotes, a promoter region that is rich in AT bases is called as
Options- A. CATT
- B. Shine Dalgarno region
- C. TATA box
- D. SV40 region Discuss
- 6. The function of the sigma factor of RNA polymerase is to
Options- A. assure that transcription begins at the proper point
- B. assure that transcription ends at the proper point
- C. assure that translation begins at the proper point
- D. assure that translation ends at the proper point Discuss
- 7. In prokaryotes, transcription is
Options- 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 Discuss
- 8. The nucleons of eukaryotic cell has
Options- A. RNA polymerase I
- B. RNA polymerase II
- C. RNA polymerase III
- D. all of these Discuss
- 9. Most transcripts of protein coding genes are cleaved
Options- A. at the 3' end just after a poly adenylation signal
- B. at the 3' end just before a poly adenylation signal
- C. at the 5' end immediately after a poly adenylation signal
- D. at the 5' end immediately before a poly adenylation signal Discuss
- 10. Each tRNA molecule has a cloverleaf secondary structure consisting of
Options- A. three stem loops
- B. two stem loops
- C. four stem loops
- D. either (a) or (b) Discuss
Transcription and Regulation problems
Search Results
Correct Answer: promoters.
Correct Answer: downstream from the start codon
Correct Answer: recognition of the -10 sequence and -35 sequence
Correct Answer: A specific sequence of DNA to which RNA polymerase binds
Correct Answer: TATA box
Correct Answer: assure that transcription begins at the proper point
Correct Answer: terminated by a protein called rho
Correct Answer: all of these
Correct Answer: at the 3' end just after a poly adenylation signal
Correct Answer: three stem loops
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