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MCQs

Total Questions : 116 | Page 8 of 12 pages
Question 71. CDNA libraries are produced from ______________________
  1.    ribonucleic acids
  2.    messenger RNAs
  3.    transfer RNAs
  4.    ribosomal RNAs
 Discuss Question
Answer: Option B. -> messenger RNAs
Answer: (b).messenger RNAs
Question 72. Which of the following can be used to clone DNA sequence of size larger than 25 kb?
  1.    Yeast artificial chromosome
  2.    SV40
  3.    Plasmid
  4.    Bacteriophage
 Discuss Question
Answer: Option A. -> Yeast artificial chromosome
Answer: (a).Yeast artificial chromosome
Question 73. Viral-mediated gene transfer is called _______________
  1.    conjugation
  2.    transduction
  3.    transformation
  4.    transversion
 Discuss Question
Answer: Option B. -> transduction
Answer: (b).transduction
Question 74. The endonuclease HaeIII recognizes ______________________ sequence.
  1.    mono-nucleotide
  2.    bi-nucleotide
  3.    tri-nucleotide
  4.    tetra-nucleotide
 Discuss Question
Answer: Option C. -> tri-nucleotide
Answer: (c).tri-nucleotide
Question 75. Bacterial artificial chromosomes are the __________________ of bacterial cells.
  1.    Polymerase enzyme
  2.    Proteases
  3.    F-factors
  4.    Exonucleases
 Discuss Question
Answer: Option C. -> F-factors
Answer: (c).F-factors
Question 76. TEM and SEM are the same microscopy techniques.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 77. The cathode of transmission electron microscope consists of a ____________________
  1.    tungsten wire
  2.    bulb
  3.    iron filament
  4.    gold wire
 Discuss Question
Answer: Option A. -> tungsten wire
Answer: (a).tungsten wire
Question 78. The resolution attainable with standard TEM is less than the theoretical value.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 79. During TEM, a vacuum is created inside the _________________________
  1.    room of operation
  2.    specimen
  3.    column
  4.    ocular system
 Discuss Question
Answer: Option C. -> column
Answer: (c).column
Question 80. The resolving power of TEM is derived from _______________
  1.    electrons
  2.    specimens
  3.    power
  4.    ocular system
 Discuss Question
Answer: Option A. -> electrons
Answer: (a).electrons

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