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MCQs

Total Questions : 116 | Page 4 of 12 pages
Question 31. Total nitrogen measurement can be used to measure ____________
  1.    pH drift
  2.    total protein
  3.    specific enzyme
  4.    viscosity
 Discuss Question
Answer: Option B. -> total protein
Answer: (b).total protein
Question 32. Protein’s solubility depends on the relative balance between protein-solvent and protein-protein interactions.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 33. Which of the following uses non-compressible matrix and high pressure?
  1.    HPLC
  2.    GC-MS
  3.    LC-MS
  4.    MS-MS
 Discuss Question
Answer: Option A. -> HPLC
Answer: (a).HPLC
Question 34. In the liquid column chromatography, there are two phases namely ___________________ and ____________________
  1.    mobile, immobile
  2.    liquid, gel
  3.    viscous, non-viscous
  4.    flammable, inflammable
 Discuss Question
Answer: Option A. -> mobile, immobile
Answer: (a).mobile, immobile
Question 35. Which of the following can be used for selective precipitation of proteins?
  1.    alcohol
  2.    phenol
  3.    ammonium sulfate
  4.    sodium acetate
 Discuss Question
Answer: Option C. -> ammonium sulfate
Answer: (c).ammonium sulfate
Question 36. When the pH of a protein is lowered _________________________
  1.    temperature decreases
  2.    negatively-charged groups neutralize
  3.    positively-charged groups neutralize
  4.    positively-charged groups decrease
 Discuss Question
Answer: Option B. -> negatively-charged groups neutralize
Answer: (b).negatively-charged groups neutralize
Question 37. A protein is neutral at the isoelectric point.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 38. Which of the following is used as an ion-exchanger resin?
  1.    ethanol
  2.    cellulose
  3.    starch
  4.    collagen
 Discuss Question
Answer: Option B. -> cellulose
Answer: (b).cellulose
Question 39. Gel-filtration chromatography separates proteins based on their ___________________
  1.    pH
  2.    temperature
  3.    morphology
  4.    effective size
 Discuss Question
Answer: Option D. -> effective size
Answer: (d).effective size
Question 40. In ion-exchange chromatography, proteins bound to the resin can be displaced by increasing the _____________________
  1.    strength of ionic buffer
  2.    size of sample
  3.    column volume
  4.    column width
 Discuss Question
Answer: Option A. -> strength of ionic buffer
Answer: (a).strength of ionic buffer

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