Discussion
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- Question
Which phage always carries a small piece of E.coli genome?
Options- A. Lambda
- B. Mu
- C. T4
- D. T3
- Correct Answer
- Mu
- 1. The nonsense codon(s) is/are
Options- A. UAG
- B. UAA
- C. UGA
- D. all of these Discuss
- 2. 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
- 3. Which of the following molecule catalyzes the transpeptidation reaction?
Options- A. RNA polymerase
- B. Peptidyl transferase
- C. DNA ligase
- D. DNA polymerase Discuss
- 4. During amino acid activation a(n)
Options- A. amino acid is bound to tRNA
- B. amino acid is bound to mRNA
- C. methyl group is attached to rRNA
- D. methyl group is attached to an amino acid Discuss
- 5. Site in the ribosome from which the tRNA donates amino acids to the growing polypeptide chain is
Options- A. P site
- B. O site
- C. T site
- D. A site Discuss
- 6. 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
- 7. 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
- 8. 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 Discuss
- 9. 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
- 10. Which of the following three codons translate as serine (Ser)?
Options- A. AGU
- B. CGA
- C. CAU
- D. AUG Discuss
Translation and Regulation problems
Search Results
Correct Answer: all of these
Correct Answer: a short sequence that acts as a ribosomal binding site
Correct Answer: Peptidyl transferase
Correct Answer: amino acid is bound to tRNA
Correct Answer: P site
Correct Answer: aid a newly synthesized polypeptide in folding to its proper shape
Correct Answer: Leader sequence
Correct Answer: senses a compound produced by the bacterium itself
Correct Answer: Haemophilus influenzae
Correct Answer: AGU
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