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Chemistry for Today: General, Orga...

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

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BuyFindarrow_forward

Chemistry for Today: General, Orga...

9th Edition
Spencer L. Seager + 2 others
ISBN: 9781305960060
Textbook Problem

In the multienzyme sequence shown below, molecules of D are able to fit to the enzyme E 1 and prevent the conversion of A to B. What is this action of E called?

A E 1 B E 2 C E 3 D

a. effector inhibition

b. allosteric inhibition

c. feedback inhibition

d. competitive inhibition by nonproduct

Interpretation Introduction

Interpretation:

The correct option corresponding to the action of E that prevents the conversion of A to B is to be identified.

Concept Introduction:

The biological catalysts which lower the minimum amount of energy required by the reactants to convert into product are known as enzymes. An enzyme does not alter the potential energy of reactant and product.

The regulation of enzyme activity is very important within a cell. There are three mechanisms associated with the regulation of enzyme activity: 1. feedback control, 2. proteolytic enzymes and zymogens, and 3. covalent modification.

Explanation

Reason for correct answer:

A process in which activation or inhibition of the first reaction in a reaction sequence is controlled by a product of the reaction sequence is known as feedback control. So, in the multienzyme sequence shown below, the action of E that prevents the conversion of A to B is called feedback inhibition.

Therefore, the correct answer is option (c)...

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