Q. Which of the following would not possible to address using a Northern Blot?

  • (A) Location of restriction sites in a particular gene
  • (B) Spatial expression of a particular gene
  • (C) Temporal expression of a particular gene
  • (D) mRNA size
πŸ’¬ Discuss
βœ… Correct Answer: (A) Location of restriction sites in a particular gene

Q. A restriction enzyme AluI with a 4-bp recognition site produces restriction fragments that should be

  • (A) 4096 bp
  • (B) 256 bp
  • (C) 16 bp
  • (D) 436 bp
πŸ’¬ Discuss
βœ… Correct Answer: (B) 256 bp

Q. Terminal transferase is used

  • (A) To add base at the 3' end of the DNA
  • (B) To add base at the 5' end of the DNA
  • (C) To carry out nick translation
  • (D) To transfer phosphate at the 3' end of the DNA
πŸ’¬ Discuss
βœ… Correct Answer: (A) To add base at the 3' end of the DNA

Q. Mung bean nuclease could be used for

  • (A) DNA synthesis
  • (B) Nucleotide hydrolysis
  • (C) Trimming single stranded regions in DNA
  • (D) Removal of phosphate groups from the ends of the DNA
πŸ’¬ Discuss
βœ… Correct Answer: (C) Trimming single stranded regions in DNA

Q. Many plasmids have Ampicillin marker. This implies

  • (A) The plasmids contain genes for ampicillin biosynthesis
  • (B) Ampicillin is required for bacterial growth after transformation
  • (C) The plasmid contains the gene encoding β-lactamase
  • (D) Ampicillin is essential for cell survival
πŸ’¬ Discuss
βœ… Correct Answer: (C) The plasmid contains the gene encoding β-lactamase

Q. In agarose gel electrophoresis

  • (A) DNA migrates towards the negative electrode
  • (B) Supercoiled plasmids migrate slower than their nicked counterparts
  • (C) Larger molecules migrate faster than smaller molecules
  • (D) Ethidium bromide can be used to visualize the DNA
πŸ’¬ Discuss
βœ… Correct Answer: (D) Ethidium bromide can be used to visualize the DNA

Q. A cloning vector consisting of CoS site inserted in a plasmid, used to clone DNA fragments of λ phage is

  • (A) Phage mid
  • (B) Cosmid
  • (C) Plasmid
  • (D) YAC
πŸ’¬ Discuss
βœ… Correct Answer: (B) Cosmid

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