Transcription problems
- 1. Which of the following statement defines a replicon?
Options- A. A DNA molecule that encodes pili for conjugation
- B. A DNA molecule that is able to replicate and be maintained
- C. A DNA template which is used in transcription
- D. The enzyme responsible for transposition Discuss
Correct Answer: A DNA molecule that is able to replicate and be maintained
- 2. What is the usual sequence of a Pribnow box?
Options- A. AUAUA
- B. TATAAT
- C. UUUUU
- D. TTGACA Discuss
Correct Answer: TATAAT
- 3. The synthesis of mRNA based on a DNA template is called
Options- A. DNA replication
- B. transcription
- C. translation
- D. DNA restriction Discuss
Correct Answer: transcription
- 4. The sigma factor
Options- A. is responsible for recognizing the termination sequence
- B. provides the catalytic function of cleaving off pyrophosphates during mRNA synthesis
- C. recognizes the promotor
- D. accomplishes DNA restriction Discuss
Correct Answer: recognizes the promotor
- 5. A specific __________ factor helps RNA polymerase bind to late promoters and transcribe late genes.
Options- A. sigma
- B. beta
- C. delta
- D. gamma Discuss
Correct Answer: sigma
- 6. Which of these catalyzes the synthesis of RNA from a DNA template?
Options- A. DNA gyrase
- B. DNA ligase
- C. DNA polymerase
- D. RNA polymerase Discuss
Correct Answer: RNA polymerase
- 7. The location of first hexameric sequence typically found in pro-karyotic promoters is
Options- A. at the transcription start site
- B. approximately 35 bases upstream of the transcription start site
- C. approximately 10 bases upstream of the transcription start site
- D. approximately 25 bases upstream of the transcription start site Discuss
Correct Answer: approximately 35 bases upstream of the transcription start site
More in Microbiology:
Programming
Copyright ©CuriousTab. All rights reserved.