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- Question
Negative regulation of protein synthesis is accomplished by
Options- A. allosteric inhibition
- B. the binding of RNA polymerase to the promoter
- C. the binding of a repressor to the DNA
- D. the binding of a repressor to the RNA polymerase
- Correct Answer
- the binding of a repressor to the DNA
- 1. Which of the following modified amino acid is used at the starting of most prokaryotic proteins?
Options- A. N-formylserine
- B. N-formylmethionine
- C. N-formylleucine
- D. N-formylalanine Discuss
- 2. Which of the following statement is correct?
Options- A. The size and sequence of introns can be deduced from the cDNA sequence
- B. Restriction endonuclease can cleave ss and dsDNA both
- C. Restriction fragment length polymorphism (RFLP) is usually formed in coding sequence of a gene
- D. Amino acid sequence of a protein can be deduced from corresponding cDNA nucleotide Discuss
- 3. 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
- 4. 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
- 5. Which of the termination codon is called amber?
Options- A. UAA
- B. UAG
- C. UGA
- D. AUG Discuss
- 6. Which of the following type of recombination does not require homologous sequences and is important for the integration of viral genomes into bacterial chromosomes?
Options- A. Mutagenic recombimation
- B. Site-specific recombination
- C. Replicative recombination
- D. General recombination Discuss
- 7. Which of the following is used by microbial genetisists as a tool?
Options- A. Bacteriophage
- B. Plasmids
- C. Transposable elements
- D. All of these Discuss
- 8. The expression of gene X (which has promoter Px) is to be monitored. A gene fusion construction for carrying this work will
Options- A. have Px but not the rest of the X coding region
- B. have the promoter of lacZ or some other reporter gene
- C. allow to monitor the expression of all genes with a promoter similar in sequence to Px
- D. give the same information as from a microarray Discuss
- 9. The term used for acquisition of naked DNA from its environment and its incorporation in their genome by a bacterium is
Options- A. transformation
- B. lysogenic conversion
- C. conjugation
- D. transduction Discuss
- 10. A microarray differs from a gene fusion in that, it
Options- A. carries DNA segments from many different genes
- B. is not constructed by cloning
- C. gives direct measurement of mRNA level
- D. all of the above Discuss
Translation and Regulation problems
Search Results
Correct Answer: N-formylmethionine
Correct Answer: Amino acid sequence of a protein can be deduced from corresponding cDNA nucleotide
Correct Answer: regulates many genes under varying environmental conditions
Correct Answer: 50S and 30S
Correct Answer: UAG
Correct Answer: Site-specific recombination
Correct Answer: All of these
Correct Answer: have Px but not the rest of the X coding region
Correct Answer: transformation
Correct Answer: all of the above
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