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MCQs

Total Questions : 72 | Page 5 of 8 pages
Question 41. The doubling time of Penicillium notatum is ___________
  1.    6 hrs
  2.    5 hrs
  3.    4 hrs
  4.    3 hrs
 Discuss Question
Answer: Option A. -> 6 hrs
Answer: (a).6 hrs
Question 42. How is streptomycin recovered?
  1.    Paper chromatography
  2.    Hydrophobic chromatography
  3.    Size exclusion chromatography
  4.    Ion exchange chromatography
 Discuss Question
Answer: Option D. -> Ion exchange chromatography
Answer: (d).Ion exchange chromatography
Question 43. Streptomycin is _____ antibiotic.
  1.    Narrow spectrum
  2.    Broad spectrum
  3.    Narrow and broad spectrum
  4.    Medium spectrum
 Discuss Question
Answer: Option B. -> Broad spectrum
Answer: (b).Broad spectrum
Question 44. PH range required for streptomycin production is __________
  1.    7-8
  2.    5-8
  3.    4-5
  4.    9-10
 Discuss Question
Answer: Option A. -> 7-8
Answer: (a).7-8
Question 45. How is penicillin stored?
  1.    Filtration
  2.    Crystallization
  3.    Distillation
  4.    Sublimation
 Discuss Question
Answer: Option B. -> Crystallization
Answer: (b).Crystallization
Question 46. Why are Enzymes active only over small range of pH?
  1.    Its enzymes property
  2.    Due to non-active site functional group charges
  3.    Due to the active site functional group charges
  4.    It prevents from structure destruction
 Discuss Question
Answer: Option C. -> Due to the active site functional group charges
Answer: (c).Due to the active site functional group charges
Question 47. What is the suitable form of ionic group of enzymes?
  1.    Acidic or basic
  2.    Acidic
  3.    Basic
  4.    neutral
 Discuss Question
Answer: Option A. -> Acidic or basic
Answer: (a).Acidic or basic
Question 48. If the substrate contains ionic groups, what happens to the pH of the medium?
  1.    The pH of medium increases
  2.    The pH of medium decreases
  3.    The pH of medium remains same
  4.    The pH of medium affects the affinity of substrate to enzyme
 Discuss Question
Answer: Option D. -> The pH of medium affects the affinity of substrate to enzyme
Answer: (d).The pH of medium affects the affinity of substrate to enzyme
Question 49. The rate of enzyme conversion of the substrate will decrease with temperature.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 50. Variation in pH of medium result in changes of ionic form of the active site.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True

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