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MCQs

Total Questions : 95 | Page 10 of 10 pages
Question 91. Xeroderma pigmentosum is caused by a defect in which of following enzymes?
  1.    helicase
  2.    topoisomerase
  3.    protease
  4.    nucleotide excision repair enzyme
 Discuss Question
Answer: Option D. -> nucleotide excision repair enzyme
Answer: (d).nucleotide excision repair enzyme
Question 92. What is process of tagging each chromosome with molecular tags so each chromosome has a different color, called?
  1.    coloring
  2.    painting
  3.    tagging
  4.    marking
 Discuss Question
Answer: Option B. -> painting
Answer: (b).painting
Question 93. Which of following enzymes catalyzes synthesis of new DNA strand?
  1.    primase
  2.    topoisomerase
  3.    helicase
  4.    DNA polymerase
 Discuss Question
Answer: Option D. -> DNA polymerase
Answer: (d).DNA polymerase
Question 94. In making if 30nm fiber of DNA, which of following histones are involved?
  1.    h1
  2.    h2a
  3.    h2b
  4.    h3
 Discuss Question
Answer: Option A. -> h1
Answer: (a).h1
Question 95. For their experiments, Hershey and Chase tagged phage DNA with which of following radioactive isotopes?
  1.    sulphur
  2.    sodium
  3.    phosphorus
  4.    radium
 Discuss Question
Answer: Option C. -> phosphorus
Answer: (c).phosphorus

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