Enzymes, Carbohydrates and Gycobiology MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Enzymes, Carbohydrates and Gycobiology, a fundamental topic in the field of Biochemistry. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Enzymes, Carbohydrates and Gycobiology 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 Enzymes, Carbohydrates and Gycobiology mcq questions that explore various aspects of Enzymes, Carbohydrates and Gycobiology problems. Each MCQ is crafted to challenge your understanding of Enzymes, Carbohydrates and Gycobiology principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Biochemistry tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Enzymes, Carbohydrates and Gycobiology MCQs are your pathway to success in mastering this essential Biochemistry topic.

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Enzymes, Carbohydrates and Gycobiology MCQs | Page 12 of 20

Discover more Topics under Biochemistry

Q111.
Which of the following enzymes plays an important role in the Cori " cycle?

a.

Glucokinase

b.

Glucose-6-phosphate dehydrogenase

c.

Lactate dehydrogenase

d.

Glucose isomerase

Discuss
Answer: (c).Lactate dehydrogenase
Q112.
Regulated metabolic pathways are

a.

compartmentalized in eukaryotes

b.

usually regulated at the first step

c.

committed after the first step

d.

all of these

Discuss
Answer: (d).all of these
Q113.
When living organisms are cooled below some critical body temperature, the metabolic reactions within their cells cease to function properly. This malfunction occurs because

a.

their enzymes lose the proper three-dimensional shape

b.

enzyme active sites become permanently bound to substrates

c.

the activation energy for the reaction is raised

d.

there is insufficient molecular motion for substrates to interact

Discuss
Answer: (d).there is insufficient molecular motion for substrates to interact
Q114.
Glycogen degradation requires the enzyme namely

a.

glycogen phosphorylase and phosphoglucomutase

b.

glycogen phosphorylase and glycogen-debranching enzyme

c.

glycogen synthase and phosphorylase

d.

none of the above

Discuss
Answer: (b).glycogen phosphorylase and glycogen-debranching enzyme
Q115.
The hormones, glucagon and epinephrine, stimulate glycogen breakdown to G-6-P

a.

only in the liver

b.

using ATP as the phosphoryl donor

c.

directly, by binding to glycogen phosphorylase

d.

indirectly, by first stimulating adenylate cyclase to make cAMP

Discuss
Answer: (d).indirectly, by first stimulating adenylate cyclase to make cAMP
Q116.
What is the cause of the genetic disease known as Galactosemia?

a.

Deficiency in lactase

b.

Absence of galactose 1-P uridyl transferase

c.

Absence of lactose synthetase

d.

Non functioning of semnase

Discuss
Answer: (b).Absence of galactose 1-P uridyl transferase
Q117.
Each reaction in a metabolic pathway is

a.

reversible

b.

irreversible

c.

catalyzed by a specific enzyme

d.

controlled by the end product

Discuss
Answer: (c).catalyzed by a specific enzyme
Q118.
Which of the following is the correct Line weaver-Burk equation?

a.

a

b.

b

c.

c

d.

d

Discuss
Answer: (a).a
Q119.
Which of the following is false?

a.

Allosteric modulators may be inhibitory or stimulatory

b.

Based on the nature of modulator, allosteric enzymes are of two types

c.

Homotropic allosteric enzymes have the substrate and modulator same

d.

Heterotropic allosteric enzymes have the substrate and modulator same

Discuss
Answer: (d).Heterotropic allosteric enzymes have the substrate and modulator same
Q120.
In the case of allosteric enzymes what is the graphical representation when initial velocity is plotted against substrate concentration?

a.

Straight line with negative slope

b.

Hyperbola

c.

Sigmoid curve

d.

Parabola

Discuss
Answer: (c).Sigmoid curve
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