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MCQs

Total Questions : 194 | Page 10 of 20 pages
Question 91. How much of total human genome is made by simple sequence DNA?
  1.    0.05
  2.    0.07
  3.    0.03
  4.    0.1
 Discuss Question
Answer: Option C. -> 0.03
Answer: (c).0.03
Question 92. How many sequencing centers were involved in human genome project?
  1.    20
  2.    30
  3.    40
  4.    50
 Discuss Question
Answer: Option A. -> 20
Answer: (a).20
Question 93. When did Neanderthals go extinct?
  1.    50,000 years ago
  2.    100,000 years ago
  3.    70,000 years ago
  4.    30,000 years ago
 Discuss Question
Answer: Option D. -> 30,000 years ago
Answer: (d).30,000 years ago
Question 94. What is haploid genome size of humans?
  1.    2000 mb
  2.    9000 mb
  3.    3000 mb
  4.    200 mb
 Discuss Question
Answer: Option C. -> 3000 mb
Answer: (c).3000 mb
Question 95. Supercoiled DNA is more compact than its relaxed counterpart and therefore __________
  1.    has lower pH value
  2.    sediments faster
  3.    sediments slower
  4.    denatures quickly
 Discuss Question
Answer: Option B. -> sediments faster
Answer: (b).sediments faster
Question 96. Etoposide and doxorubicin, the drugs used in Cancer treatment target the enzyme ___________
  1.    topoisomerase I
  2.    topoisomerase II
  3.    helicase
  4.    isomerase
 Discuss Question
Answer: Option B. -> topoisomerase II
Answer: (b).topoisomerase II
Question 97. The three-dimensional structure of DNA can be described by _________
  1.    Vacuum filtration
  2.    X-ray crystallography
  3.    Gel electrophoresis
  4.    Mass spectroscopy
 Discuss Question
Answer: Option B. -> X-ray crystallography
Answer: (b).X-ray crystallography
Question 98. Circular DNAs are negatively supercoiled.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 99. Which of the following is used to visualize DNA molecules in a gel?
  1.    ethidium bromide
  2.    methylene blue
  3.    safranin
  4.    bromophenol blue
 Discuss Question
Answer: Option A. -> ethidium bromide
Answer: (a).ethidium bromide
Question 100. The process of DNA melting can be monitored by a change in ___________
  1.    absorbance
  2.    pH
  3.    concentration
  4.    color
 Discuss Question
Answer: Option A. -> absorbance
Answer: (a).absorbance

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