Questions and answers for exam Preparation

MCQs

Total Questions : 32 | Page 2 of 4 pages

Question 11. The development of genetically improved enzymes and of novel enzyme-like catalysts is undertaken by molecular biologists and organic chemists respectively.

True
False
May be True or False
Can't say

Discuss Question

Answer: Option A. -> True
Answer: (a).True

Question 12. Many enzymes are not totally specific for their natural substrates.

True
False
May be True or False
Can't say

Discuss Question

Answer: Option A. -> True
Answer: (a).True

Question 13. What does X represent in the following reaction?
Β-D-Glucose + benzoquinone \(\underset{X}{\rightarrow}\) D-glucono-1,5-lactone + Hydroquinone

Acetylcholine esterase
Glucose oxidase
Lipase
Papain

Discuss Question

Answer: Option B. -> Glucose oxidase
Answer: (b).Glucose oxidase

Question 14. Lipases act as ____________ in primarily non-aqueous environments.

oxidoreductases
isomerases
transesterases
lyases

Discuss Question

Answer: Option C. -> transesterases
Answer: (c).transesterases

Question 15. Other than oxygen, which of the following is an oxidant for glucose oxidase?

Benzoquinone
D-glucono-1,5-lactone
D-Carnitine
Hydroquinone

Discuss Question

Answer: Option A. -> Benzoquinone
Answer: (a).Benzoquinone

Question 16. What does ‘Y’ represent in the following reaction?
Acetylcholine + water \(\underset{Y}{\rightarrow}\) Choline + acetic acid

Acetylcholine esterase
Glucose oxidase
Rennet
Papain

Discuss Question

Answer: Option C. -> Rennet
Answer: (c).Rennet

Question 17. What does ‘Z’ represent in the reaction?
Acetyl – D – carnitine + water \(_{\overrightarrow{Acetylcholine \,esterase}}\) Z + acetic acid

D – carnitine
Choline
Hydroquinone
L -carnitine

Discuss Question

Answer: Option A. -> D – carnitine
Answer: (a).D – carnitine

Question 18. The property of increasing the amount of the enzyme by increasing the number of gene copies is used increase the activity of __________ in E. Coli.

Subtilisin
Trypsin
Penicillin-G-amidase
Glucose isomerase

Discuss Question

Answer: Option C. -> Penicillin-G-amidase
Answer: (c).Penicillin-G-amidase

Question 19. Which of the following property may not be improved or altered using genetic engineering?

Enzymes from dangerous or unapproved microorganisms may be cloned into safe high-production microorganisms
Enzymes from slow growing or limited plant or animal tissue may be cloned into safe high-production microorganisms
If the biosensor is to be used for invasive monitoring in clinical situations, the probe must be tiny and biocompatible, having no toxic or antigenic effects
Enzymes may be redesigned to fit more appropriately into industrial processes

Discuss Question

Answer: Option C. -> If the biosensor is to be used for invasive monitoring in clinical situations, the probe must be tiny and biocompatible, having no toxic or antigenic effects
Answer: (c).If the biosensor is to be used for invasive monitoring in clinical situations, the probe must be tiny and biocompatible, having no toxic or antigenic effects

Question 20. Which of the following property may not be improved or altered using genetic engineering?