Discussion
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- Question
A quorum sensing system
Options- A. detects a signal from the external environment
- B. senses a compound produced by the bacterium itself
- C. consists of a sensor component that phosphorylates a regulatory protein
- D. controls the activity of ribosomes directly
- Correct Answer
- senses a compound produced by the bacterium itself
- 1. Which of the following is a nontranslated sequence located between the transcription and the translation start site?
Options- A. Ending frame
- B. Leader sequence
- C. Trailer sequence
- D. Reading frame Discuss
- 2. The role of molecular chaperones is to
Options- A. facilitate binding of ribosomes to mRNA
- B. degrade newly synthesized polypeptides that contain inaccurate sequences
- C. facilitate binding of RNA polymerase to DNA
- D. aid a newly synthesized polypeptide in folding to its proper shape Discuss
- 3. Which phage always carries a small piece of E.coli genome?
Options- A. Lambda
- B. Mu
- C. T4
- D. T3 Discuss
- 4. The nonsense codon(s) is/are
Options- A. UAG
- B. UAA
- C. UGA
- D. all of these Discuss
- 5. The Shine-Dalgarno sequence is
Options- A. trailer sequence
- B. a stop codon
- C. the reading frame of a gene
- D. a short sequence that acts as a ribosomal binding site Discuss
- 6. What was the first bacterial genome to be sequenced and made public?
Options- A. Bacillus subtilis
- B. Escherichia coli
- C. Haemophilus influenzae
- D. No bacterial genome has been sequenced yet Discuss
- 7. Which of the following three codons translate as serine (Ser)?
Options- A. AGU
- B. CGA
- C. CAU
- D. AUG Discuss
- 8. Which of the termination codon is called amber?
Options- A. UAA
- B. UAG
- C. UGA
- D. AUG Discuss
- 9. What are the Svedberg values for the subunits of the 70S ribosomes of E. colli?
Options- A. 40S and 30S
- B. 50S and 20S
- C. 50S and 30S
- D. 40S and 20S Discuss
- 10. The development of global regulatory systems in prokaryotes
Options- A. determines the exact location of the cell on the globe
- B. aids in DNA replication
- C. determines the exact location of the replication site
- D. regulates many genes under varying environmental conditions Discuss
Translation and Regulation problems
Search Results
Correct Answer: Leader sequence
Correct Answer: aid a newly synthesized polypeptide in folding to its proper shape
Correct Answer: Mu
Correct Answer: all of these
Correct Answer: a short sequence that acts as a ribosomal binding site
Correct Answer: Haemophilus influenzae
Correct Answer: AGU
Correct Answer: UAG
Correct Answer: 50S and 30S
Correct Answer: regulates many genes under varying environmental conditions
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