Immobilized Enzyme MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Immobilized Enzyme, a fundamental topic in the field of Biochemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Immobilized Enzyme MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Immobilized Enzyme mcq questions that explore various aspects of Immobilized Enzyme problems. Each MCQ is crafted to challenge your understanding of Immobilized Enzyme principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Biochemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Immobilized Enzyme MCQs are your pathway to success in mastering this essential Biochemical Engineering topic.

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Immobilized Enzyme MCQs | Page 1 of 3

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Q1.
For glucose isomerization by immobilized enzyme, the reactor generally used is

a.

CSTR

b.

plug flow

c.

packed bed

d.

fluidized bed

Discuss
Answer: (c).packed bed
Q2.
If Damkohler number, NDa >>1, the reaction rate is much greater than the mass transfer rate and the overall reaction is controlled by the rate of mass transfer. In this case, the enzyme reaction can be described as (where Csb and Cs are the substrate concentration in bulk of solution and at the immobilized enzyme surface respectively. ks mass transfer coefficient, and a is the surface area of an immobilized enzyme particles)

a.

rp = ksa(Csb-Cs)

b.

rp = ksaCsb

c.

rp = ksaCs

d.

rp = ksa(Csb+Cs)

Discuss
Answer: (b).rp = ksaCsb
Q3.
The most commonly employed cross-linked polymer is the

a.

polyacrylamide gel

b.

collagen

c.

celluloses

d.

cation exchange resin

Discuss
Answer: (a).polyacrylamide gel
Q4.
Which of the following is not the correct answer?

a.

Immobilized enzyme may show selectively altered chemical properties

b.

Immobilized enzyme may show selectively altered physical properties

c.

Immobilized enzyme may simulate the realistic natural environment where the enzyme come from the cell

d.

None of the above

Discuss
Answer: (d).None of the above
Q5.
Commonly employed water insoluble supports for the covalent attachment of enzyme include

a.

acrylamide based polymers

b.

polypeptides

c.

dextran

d.

all of these

Discuss
Answer: (d).all of these
Q6.
Which of the following is not a physical method of immobilization?

a.

Adsorption

b.

Entrapment

c.

Micro encapsulation

d.

None of these

Discuss
Answer: (d).None of these
Q7.
The support material for immobilization of cells of Bacillus subtilis is

a.

ion exchange resins

b.

gelatin

c.

Anthracite

d.

agarose and carbodiimide

Discuss
Answer: (d).agarose and carbodiimide
Q8.
The intraparticle mass transfer resistance can affect the rate of enzyme reaction, if enzymes are immobilized by

a.

copolymerization or microencapsulation

b.

crosslinking using multifunctional reagents

c.

adsorption

d.

all of the above

Discuss
Answer: (a).copolymerization or microencapsulation
Q9.
The covalent attachment of enzyme molecules is via

a.

nonessential amino acids residues to water insoluble, functional supports

b.

essential amino acids residues to water insoluble, functional supports

c.

nonessential amino acids residues to water soluble, functional supports

d.

essential amino acids residues to water soluble, functional supports

Discuss
Answer: (a).nonessential amino acids residues to water insoluble, functional supports
Q10.
To measure the extent to which the reaction rate is lowered because of resistance to mass transfer, the effectiveness factor of an immobilized enzyme, η can be defined as

a.

reaction rate/rate if not slowed by diffusion

b.

rate if not slowed by diffusion/ reaction rate

c.

actual reaction rate/ rate if not slowed by diffusion

d.

rate if not slowed by diffusion/ actual reaction rate

Discuss
Answer: (c).actual reaction rate/ rate if not slowed by diffusion
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