Enzyme Technology

ENZYME TECHNOLOGY FUTURE PROSPECTS MCQs

Total Questions : 32

Page 1 of 4 pages
Question 1. Which of the following synzyme has 27% of the activity of a-chymotrypsin against 4-nitrophenyl esters?
  1.    Primary amines alkylated with 1-iodododecane and 4(5)-chloromethylimidazole
  2.    Myoglobin achieved by attaching (Ru(NH₃)₅)³⁺ to three surface histidine residues
  3.    C-6 hydroxyl group of β-cyclodextrins was covalently derivatized by an activated pyridoxal coenzyme
  4.    Polyglutamic acid acts as an esterase in much the same fashion as the acid proteases for the hydrolysis of 4-nitrophenyl acetate
 Discuss Question
Answer is Option A. -> Primary amines alkylated with 1-iodododecane and 4(5)-chloromethylimidazole
Answer: (a).Primary amines alkylated with 1-iodododecane and 4(5)-chloromethylimidazole
Question 2. Coenzyme may be immobilised together with the enzyme and regenerated in situ.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer is Option A. -> True
Answer: (a).True
Question 3. Which of the following is not a strategy to produce synzymes?
  1.    Monoclonal antibodies covalently attached to the phosphonate esters which can act as esterases
  2.    Molecular imprinting of polymers
  3.    Primary amines alkylated with 1-iodododecane and 4(5)-chloromethylimidazole
  4.    Synthesis of cyclodextrins from starch by the cyclomaltodextrin glucanotransferase from Bacillus macerans
 Discuss Question
Answer is Option D. -> Synthesis of cyclodextrins from starch by the cyclomaltodextrin glucanotransferase from Bacillus macerans
Answer: (d).Synthesis of cyclodextrins from starch by the cyclomaltodextrin glucanotransferase from Bacillus macerans
Question 4. Which of the following is not a coenzyme?
  1.    NADH
  2.    ATP
  3.    Synzyme
  4.    NADPH
 Discuss Question
Answer is Option C. -> Synzyme
Answer: (c).Synzyme
Question 5. Which of the following is not true for coenzymes?
  1.    Coenzymes may be immobilized/regenerated with the use of whole-cell systems
  2.    Membrane reactors may be used to immobilize the coenzyme
  3.    They are referred to as artificial enzymes
  4.    Coenzymes may be derivatized for adequate immobilization and regeneration
 Discuss Question
Answer is Option C. -> They are referred to as artificial enzymes
Answer: (c).They are referred to as artificial enzymes
Question 6. Which of the following coenzyme is not derivatized by alkylation of the exocyclic N6-amino nitrogen of the adenine present in it?
  1.    Papain
  2.    Coenzyme A
  3.    NAD⁺
  4.    NADP⁺
 Discuss Question
Answer is Option A. -> Papain
Answer: (a).Papain
Question 7. Which of the following is an example of regeneration of the derivatized coenzymes by enzymic means?
  1.    Formate dehydrogenase
  2.    Exocyclic N6-amino nitrogen of the adenine moiety
  3.    Dextrans
  4.    Polyethylene glycol
 Discuss Question
Answer is Option A. -> Formate dehydrogenase
Answer: (a).Formate dehydrogenase
Question 8. What is represented in the following diagram?What Is Represented In The Following Diagram?....
  1.    Protein engineering cycle
  2.    Site directed mutagenesis
  3.    Polymerase chain reaction
  4.    Transcription
 Discuss Question
Answer is Option A. -> Protein engineering cycle
Answer: (a).Protein engineering cycle
Question 9. Which of the following are high molecular weight water-soluble derivatives which are used for derivatization of co-enzymes?
  1.    Dextrans
  2.    Exocyclic N6-amino nitrogen
  3.    Polyethyleneimine
  4.    Polyethylene glycols
 Discuss Question
Answer is Option B. -> Exocyclic N6-amino nitrogen
Answer: (b).Exocyclic N6-amino nitrogen
Question 10. Which of the following system is not used to derivatize coenzymes?
  1.    Alkylation of the exocyclic N6-amino nitrogen of the adenine moiety present in the coenzymes
  2.    High molecular weight water-soluble derivatives
  3.    Derivative of myoglobin acts as an effective natural ascorbate oxidase
  4.    Enzymic regeneration
 Discuss Question
Answer is Option C. -> Derivative of myoglobin acts as an effective natural ascorbate oxidase
Answer: (c).Derivative of myoglobin acts as an effective natural ascorbate oxidase