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MCQs

Total Questions : 348 | Page 6 of 35 pages
Question 51. The enzyme aminoacyl-tRNA synthetase is responsible for linking ____________________________
  1.    amino acid to tRNA
  2.    amino acid to mRNA
  3.    carboxyl to tRNA
  4.    carboxyl to mRNA
 Discuss Question
Answer: Option A. -> amino acid to tRNA
Answer: (a).amino acid to tRNA
Question 52. Which of the following moves in consecutive blocks of three nucleotides?
  1.    ribosome
  2.    ribozyme
  3.    polymerase
  4.    helicase
 Discuss Question
Answer: Option A. -> ribosome
Answer: (a).ribosome
Question 53. The synthesis of polypeptide can be divided into ______ distinct activities.
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option C. -> 3
Answer: (c).3
Question 54. Which of the following is an initiation codon?
  1.    AAA
  2.    AUG
  3.    AGU
  4.    AGG
 Discuss Question
Answer: Option B. -> AUG
Answer: (b).AUG
Question 55. Shine-Dalgarno sequence is present in the ____________________
  1.    hnRNA
  2.    mRNA
  3.    tRNA
  4.    siRNA
 Discuss Question
Answer: Option B. -> mRNA
Answer: (b).mRNA
Question 56. Initiation factors are ______________________
  1.    lipids
  2.    soluble proteins
  3.    lipopolysaccharides
  4.    phospholipids
 Discuss Question
Answer: Option B. -> soluble proteins
Answer: (b).soluble proteins
Question 57. The first amino acid incorporated at the N-terminus of polypeptide is ___________________
  1.    methionine
  2.    cysteine
  3.    tryptophan
  4.    valine
 Discuss Question
Answer: Option A. -> methionine
Answer: (a).methionine
Question 58. Most alterations in the genes occur during ____________________
  1.    cell division
  2.    motility
  3.    anaerobic conditions
  4.    sunlight exposure
 Discuss Question
Answer: Option A. -> cell division
Answer: (a).cell division
Question 59. What drives the conformational change in the ribosome?
  1.    GTP hydrolysis
  2.    AMP hydrolysis
  3.    ATP hydrolysis
  4.    GDP hydrolysis
 Discuss Question
Answer: Option A. -> GTP hydrolysis
Answer: (a).GTP hydrolysis
Question 60. Mutations in which of the following genes lead to a rare form of muscular dystrophy?
  1.    lamin
  2.    tannin
  3.    gerotonin
  4.    rennin
 Discuss Question
Answer: Option A. -> lamin
Answer: (a).lamin

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