Q.1
Which of the following does not contribute to the stability of tRNA?
  • a) Hydrogen bonding
  • b) Hydrophobic interactions
  • c) Base and sugar-phosphate backbone interaction
  • d) Base pairing
Q.2
Which histone molecule produces novel binding sites for protein components of the kinetochore?
  • a) H3
  • b) H4
  • c) H2A
  • d) CENP – A
Q.3
Which of the following is not promoted by histone tail modification?
  • a) Nucleosome sliding
  • b) Nucleosome remodeling
  • c) Gene expression
  • d) Formation of repressive structures
Q.4
Which of these factors contribute to a decrease in gene density?
  • a) Intergenic sequence
  • b) Cell size
  • c) Operon
  • d) Exon sequence
Q.5
Which of the following will form a palindromic sequence?
  • a) AGTCCTGA
  • b) GTTCCAAG
  • c) ATTGCAAT
  • d) GTTGGAAC
Q.6
Which of the following cannot be used for the separation of nucleic acids?
  • a) Northern blotting
  • b) PAGE
  • c) SDS – PAGE
  • d) None of the mentioned
Q.7
Which of the following organism has been found to have a positively supercoiled DNA?
  • a) Thermus aquaticus
  • b) Saurida tumbil
  • c) Monarda didyma
  • d) Cyanobacteria
Q.8
Which of the following does not occur during cell division in prokaryotes?
  • a) DNA rejoining
  • b) Strand passage
  • c) Multiple decatenations
  • d) DNA cleavage
Q.9
During DNA cloning which of the following is not a crucial requirement?
  • a) Protein expression
  • b) Vector
  • c) Molecular cutter
  • d) DNA inserts
Q.10
Which of the following is not required for DNA sequencing?
  • a) Polymerase chain reaction
  • b) Electrophoresis
  • c) Restriction digestion
  • d) Cloning
Q.11
Though unusual, pre – tRNA also undergo splicing. Which of the following helps in achieving this?
  • a) tRNA itself
  • b) Endonuclease
  • c) Splicosome
  • d) RNA polymerase exonuclease activity
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