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MCQs

Total Questions : 116 | Page 5 of 12 pages
Question 41. Proteins interacting with specific substances can be separated using ___________________
  1.    ion-exchange chromatography
  2.    paper chromatography
  3.    affinity chromatography
  4.    gel-filtration chromatography
 Discuss Question
Answer: Option C. -> affinity chromatography
Answer: (c).affinity chromatography
Question 42. In gel-filtration chromatography, the proteins ______________________
  1.    bind to the column
  2.    diffuse through the column
  3.    denature
  4.    vaporize
 Discuss Question
Answer: Option B. -> diffuse through the column
Answer: (b).diffuse through the column
Question 43. Which of the following is used in PAGE to prevent the mixing of the sample with running buffer?
  1.    ethanol
  2.    methanol
  3.    chloroform
  4.    sucrose
 Discuss Question
Answer: Option D. -> sucrose
Answer: (d).sucrose
Question 44. Polyacrylamide gel electrophoresis uses ___________________ to separate proteins.
  1.    pressure difference
  2.    temperature difference
  3.    electric field
  4.    magnetic field
 Discuss Question
Answer: Option C. -> electric field
Answer: (c).electric field
Question 45. The yeast two-hybrid system is used for studying ________________________
  1.    protein-protein interactions
  2.    pressure changes
  3.    molecular size
  4.    differentiation pattern
 Discuss Question
Answer: Option A. -> protein-protein interactions
Answer: (a).protein-protein interactions
Question 46. Synchrotrons generate _____________________
  1.    Peptides
  2.    X rays
  3.    Infrared rays
  4.    Carcinogens
 Discuss Question
Answer: Option B. -> X rays
Answer: (b).X rays
Question 47. In X-ray diffraction, the protein crystals are bombarded with ____________
  1.    UV rays
  2.    X rays
  3.    Gamma rays
  4.    Infrared rays
 Discuss Question
Answer: Option B. -> X rays
Answer: (b).X rays
Question 48. Electron cryomicroscopy is used mainly for _______________
  1.    soluble proteins
  2.    non-soluble proteins
  3.    carbohydrates
  4.    lipids
 Discuss Question
Answer: Option B. -> non-soluble proteins
Answer: (b).non-soluble proteins
Question 49. Which was the first protein to have its structure determined using X-ray crystallography?
  1.    keratin
  2.    myoglobin
  3.    immunoglobulin
  4.    globulin
 Discuss Question
Answer: Option B. -> myoglobin
Answer: (b).myoglobin
Question 50. Which of the following is used to lyse the nucleus and release the DNA?
  1.    sodium dodecyl sulfate
  2.    ammonium sulfate
  3.    ferric phosphate
  4.    fluorine
 Discuss Question
Answer: Option A. -> sodium dodecyl sulfate
Answer: (a).sodium dodecyl sulfate

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