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MCQs

Total Questions : 116 | Page 11 of 12 pages
Question 101. One Svedberg unit is equivalent to 10¯¹³ ______________
  1.    hours
  2.    minutes
  3.    seconds
  4.    milli-seconds
 Discuss Question
Answer: Option C. -> seconds
Answer: (c).seconds
Question 102. Nucleic acid hybridization is used to identify ________________________
  1.    RNAs
  2.    DNAs
  3.    Complementary base sequences
  4.    Proteins
 Discuss Question
Answer: Option C. -> Complementary base sequences
Answer: (c).Complementary base sequences
Question 103. In rate-zonal sedimentation, the nucleic acids are separated base on __________________
  1.    nucleotide length
  2.    relative charge
  3.    relative mass
  4.    mass-to-charge ratio
 Discuss Question
Answer: Option A. -> nucleotide length
Answer: (a).nucleotide length
Question 104. Equilibrium centrifugation is also known as ___________________ centrifugation.
  1.    isotonic
  2.    isopycnic
  3.    gradient
  4.    sucrose
 Discuss Question
Answer: Option B. -> isopycnic
Answer: (b).isopycnic
Question 105. Which technique can be used to separate ¹⁵N and ¹⁴N?
  1.    Rate-zonal centrifugation
  2.    Isopycnic centrifugation
  3.    HPLC
  4.    Mass spectrometry
 Discuss Question
Answer: Option B. -> Isopycnic centrifugation
Answer: (b).Isopycnic centrifugation
Question 106. The Feulgen stain is used for staining ____________________
  1.    plasma membrane
  2.    chromosomes
  3.    phospholipids
  4.    mitochondria
 Discuss Question
Answer: Option B. -> chromosomes
Answer: (b).chromosomes
Question 107. The numerical aperture is constant for each lens.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 108. The maximum possible numerical aperture of 1.5 is for a ______________ lens.
  1.    oil immersion
  2.    air interface
  3.    water interface
  4.    binocular
 Discuss Question
Answer: Option A. -> oil immersion
Answer: (a).oil immersion
Question 109. A fixative _______________ the macromolecular components of a cell.
  1.    degrades
  2.    immobilizes
  3.    penetrates
  4.    granulates
 Discuss Question
Answer: Option B. -> immobilizes
Answer: (b).immobilizes
Question 110. Which of the following is used for the preparation of a section specimen?
  1.    phenol
  2.    isoamyl alcohol
  3.    fixative
  4.    lubricative
 Discuss Question
Answer: Option C. -> fixative
Answer: (c).fixative

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