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Bioinformatics
1000 Molecular Biology
Quiz 2
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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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