Discussion
Home ‣ Biochemistry ‣ Transcription and Regulation Comments
- Question
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
- Correct Answer
- A specific sequence of DNA to which RNA polymerase binds
- 1. 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
- 2. Which of the following is necessary for transcription to occur?
Options- A. DNA molecule
- B. RNA polymerase
- C. DNA polymerase
- D. Both DNA & RNA polymerase Discuss
- 3. Transcription results in
Options- A. an amino acid chain
- B. messenger RNA
- C. complementary DNA
- D. Okazaki fragments Discuss
- 4. Enhancers are regions that
Options- A. bind RNA polymerase
- B. are adjacent to the TATA box
- C. are CAT box binding proteins
- D. modulate transcription Discuss
- 5. The binding of lac repressor to DNA could be considered to be analogous to
Options- A. competitive inhibition of an enzyme
- B. mixed-type inhibition of an enzyme
- C. uncompetitive inhibition of an enzyme
- D. allosteric effects in enzyme regulation Discuss
- 6. 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
- 7. 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
- 8. 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
- 9. 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 Discuss
- 10. 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
Transcription and Regulation problems
Search Results
Correct Answer: TATA box
Correct Answer: Both DNA & RNA polymerase
Correct Answer: messenger RNA
Correct Answer: modulate transcription
Correct Answer: competitive inhibition of an enzyme
Correct Answer: recognition of the -10 sequence and -35 sequence
Correct Answer: downstream from the start codon
Correct Answer: promoters.
Correct Answer: RNA polymerase II
Correct Answer: assure that transcription begins at the proper point
Comments
There are no comments.More in Biochemistry:
Programming
Copyright ©CuriousTab. All rights reserved.