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A species of bacteria can use sucrose as its sole source of carbon energy. The bacterial enzyme Q is used to hydrolyze sucrose into its constituent monosaccharides. In the absence of sucrose, there are fewer than 10 enzyme Q molecules in a bacterial cell. In the presence of sucrose there are more than several thousand enzyme molecules in a single cell. Enzyme Q does not exist as a zymogen. a. What are the constituent monosaccharides of sucrose? b. What is the specific type of enzyme regulation that controls enzyme Q ? c. Suggest a mechanism of how this type of enzyme regulation occurs.

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Chemistry for Today: General, Orga...

9th Edition
Spencer L. Seager + 2 others
Publisher: Cengage Learning
ISBN: 9781305960060

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Chapter
Section
BuyFindarrow_forward

Chemistry for Today: General, Orga...

9th Edition
Spencer L. Seager + 2 others
Publisher: Cengage Learning
ISBN: 9781305960060
Chapter 21, Problem 21.58E
Textbook Problem
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A species of bacteria can use sucrose as its sole source of carbon energy. The bacterial enzyme Q is used to hydrolyze sucrose into its constituent monosaccharides. In the absence of sucrose, there are fewer than 10 enzyme Q molecules in a bacterial cell. In the presence of sucrose there are more than several thousand enzyme molecules in a single cell. Enzyme Q does not exist as a zymogen.

a. What are the constituent monosaccharides of sucrose?

b. What is the specific type of enzyme regulation that controls enzyme Q ?

c. Suggest a mechanism of how this type of enzyme regulation occurs.

Interpretation Introduction

(a)

Interpretation:

The constituent monosaccharides of sucrose are to be stated.

Concept introduction:

Enzymes are the biocatalysts. Enzyme enhances the activity of biochemical process. For increasing the rate of biochemical reactions, enzyme should be biologically active. The reaction for the formation of an active enzyme is shown below.

Apoenzyme+cofactoractiveenzyme

Explanation of Solution

Sucrose is a disaccharide. Disaccharides are formed by the combination of two monosaccharides. The monosaccharides units of a disaccharide can be identified by the hydrolysis of disaccharide.

Interpretation Introduction

(b)

Interpretation:

The specific type of enzyme regulation that controls the enzyme Q is to be stated.

Concept introduction:

Enzymes are the biocatalysts. Enzyme enhances the activity of biochemical process. For increasing the rate of biochemical reactions, enzyme should be biologically active. The reaction for the formation of an active enzyme is shown below.

Apoenzyme+cofactoractiveenzyme

Interpretation Introduction

(c)

Interpretation:

The mechanism of the enzyme regulation is to be stated.

Concept introduction:

Enzymes are the biocatalysts. Enzyme enhances the activity of biochemical process. For increasing the rate of biochemical reactions, enzyme should be biologically active. The reaction for the formation of an active enzyme is shown below.

Apoenzyme+cofactoractiveenzyme

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Chapter 21 Solutions

Chemistry for Today: General, Organic, and Biochemistry
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