Enzyme Technology Mock Test 8

10%

Question 1 of 10

1. Which is not true in case of development of commercial enzymes?

Large scale enzyme purifications

Screening for new and improved enzymes

Dealing with the regulatory authorities

Economy, effectiveness and safety

Question 1 of 10

Question 2 of 10

2. Which of the following property may not be improved or altered using genetic engineering?

Yield and Kinetics

Various safety aspects

Accurate, precise, reproducible and linear

Ease of downstream processing

Question 2 of 10

Question 3 of 10

3. Which of the following are high molecular weight water-soluble derivatives which are used for derivatization of co-enzymes?

Polyethylene glycols

Dextrans

Polyethyleneimine

Exocyclic N6-amino nitrogen

Question 3 of 10

Question 4 of 10

4. Which of the following is not a coenzyme?

NADPH

Synzyme

NADH

ATP

Question 4 of 10

Question 5 of 10

5. What is represented in the following diagram?

Dextrans

Formate dehydrogenase

Exocyclic N6-amino nitrogen of the adenine moiety

Acetate kinase

Question 5 of 10

Question 6 of 10

6. Cyclodextrins are synthesized from starch using __________

yeast

B. Licheniformis

B. acidopullulyticus

cyclomaltodextrin glucan transferase

Question 6 of 10

Question 7 of 10

7. Lipases act as ____________ in primarily non-aqueous environments.

lyases

transesterases

isomerases

oxidoreductases

Question 7 of 10

Question 8 of 10

8. Bromelain: Brewing industry:: Chymotrypsin: __________

Cheese making industry

Detergent industry

Pharmaceutical industry

Leather industry

Question 8 of 10

Question 9 of 10

9. Which of these is not added as a preservative for solid enzyme preparation?

Lactose

Thiols

Carboxymethylcellulose

Starch

Question 9 of 10

Question 10 of 10

10. Which of the following is not a step involved in site directed mutagenesis using a hypothetical example?

Cleavage by Hind III

Identification of mutant DNA by hybridization with radioactively labelled oligonucleotides

Derive the primary structure of the enzyme from the DNA sequence

Primary structure of putative enzyme is proposed with an asparagine residue replacing the serine present in the native enzyme

Question 10 of 10