Gene Expression MCQ

Test your knowledge with important Gene Expression MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Gene Expression MCQs at Bissoy

• What drives the conformational change in the ribosome?
  ক

  GTP hydrolysis

  খ

  AMP hydrolysis

  গ

  ATP hydrolysis

  ঘ

  GDP hydrolysis
• The first amino acid incorporated at the N-terminus of polypeptide is ___________________
  ক

  methionine

  খ

  cysteine

  গ

  tryptophan

  ঘ

  valine
• Initiation factors are ______________________
  ক

  lipids

  খ

  soluble proteins

  গ

  lipopolysaccharides

  ঘ

  phospholipids
• Shine-Dalgarno sequence is present in the ____________________
  ক

  hnRNA

  খ

  mRNA

  গ

  tRNA

  ঘ

  siRNA
• Which of the following is an initiation codon?
  ক

  AAA

  খ

  AUG

  গ

  AGU

  ঘ

  AGG
• Which of the following moves in consecutive blocks of three nucleotides?
  ক

  ribosome

  খ

  ribozyme

  গ

  polymerase

  ঘ

  helicase
• The synthesis of polypeptide can be divided into ______ distinct activities.
  ক

  1

  খ

  2

  গ

  3

  ঘ

  4
• The enzyme aminoacyl-tRNA synthetase is responsible for linking ____________________________
  ক

  amino acid to tRNA

  খ

  amino acid to mRNA

  গ

  carboxyl to tRNA

  ঘ

  carboxyl to mRNA
• The “wobble hypothesis” was proposed by ______________________
  ক

  James Watson

  খ

  Barbara McClintock

  গ

  Thomas Morgan

  ঘ

  Francis Crick
• The part of tRNA that interacts with the codon of mRNA is termed as __________
  ক

  Anticodon

  খ

  T-arm

  গ

  D-arm

  ঘ

  V-arm
• All mature tRNAs have the sequence CCA at their 3’ end.
  ক

  True

  খ

  False
• The length of tRNA molecules is ________________ nucleotides.
  ক

  20-30

  খ

  50-70

  গ

  73-93

  ঘ

  83-93
• In the below figure of a transfer RNA, which is the site of attachment for an amino acid?
  ক

  a

  খ

  b

  গ

  c

  ঘ

  d
• Which region of the tRNA molecule is highly variable?
  ক

  a

  খ

  b

  গ

  c

  ঘ

  d
• When was the first base sequence of a transfer RNA reported?
  ক

  1935

  খ

  1945

  গ

  1955

  ঘ

  1965
• Transfer RNA linked to an amino acid is called _____________
  ক

  a-tRNA

  খ

  amino-tRNA

  গ

  tRNA

  ঘ

  aa-tRNA
• Transfer RNAs decode the information present in __________________
  ক

  mRNA

  খ

  siRNA

  গ

  miRNA

  ঘ

  rRNA
• Translation is the process of _____________________
  ক

  mRNA synthesis

  খ

  tRNA synthesis

  গ

  protein synthesis

  ঘ

  nucleic acid synthesis
• Which types of changes participate in the process of natural selection?
  ক

  nonsynonymous

  খ

  phenotypic

  গ

  allotypic

  ঘ

  synonymous
• A change in nucleotide sequence that does not affect the amino acid sequence is called _____________ change.
  ক

  insignificant

  খ

  significant

  গ

  synonymous

  ঘ

  nonsynonymous
• Which of the following is a stop codon in mitochondrial mRNA?
  ক

  AUG

  খ

  UUU

  গ

  AGG

  ঘ

  UGA
• UGA is a universal stop codon.
  ক

  True

  খ

  False
• Which was the first artificially synthesized polypeptide?
  ক

  polyphenylalanine

  খ

  tyrosine

  গ

  valine

  ঘ

  polyisoleucine
• First artificially synthesized gene sequence was _________________
  ক

  poly(U)

  খ

  poly(A)

  গ

  poly(G)

  ঘ

  poly(C)
• The degeneracy of code was originally predicted by __________________
  ক

  Charles Darwin

  খ

  Francis Crick

  গ

  Robert Hooke

  ঘ

  James Watson
• How many codons do not code for amino acids?
  ক

  3

  খ

  5

  গ

  9

  ঘ

  11
• The genetic code is degenerate.
  ক

  True

  খ

  False
• Who elaborated on the significance of codons?
  ক

  George Gamow

  খ

  Thomas Morgan

  গ

  H. J. Muller

  ঘ

  James Watson
• PIWI proteins have been best studied in _________________
  ক

  mice

  খ

  fruit flies

  গ

  nematodes

  ঘ

  maize
• Which type of RNAs suppress the movement of transposons in the germline?
  ক

  mRNAs

  খ

  piRNAs

  গ

  miRNAs

  ঘ

  tRNAs