Enzymes are proteins that play various roles in the body. An enzyme can increase the rate of a reaction without even being utilized in the reaction. An enzyme has an active site to which reactant binds and catalyze the reaction to form a product.

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Chapter 2, Problem 23RAC

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Enzymes are proteins that play various roles in the body. An enzyme can increase the rate of a reaction without even being utilized in the reaction. An enzyme has an active site to which reactant binds and catalyze the reaction to form a product.

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Which of the following accurately characterizes enzyme active sites? (Pick two.) Active sites form the greatest number of favorable electrostatic interactions with a reaction's substrates. Active sites form the greatest number of favorable electrostatic interactions with a reaction's transition state. Competitive inhibitors that resemble an enzyme's substrate bind more tightly to the active site than those that resemble products or transition states. Competitive inhibitors that resemble an enzyme's transition state bind more tightly to the active site than those that resemble products or substrates.

Which of the following is NOT true about enzymes? Enzyme inhibitors interact reversibly or irreversibly with an enzyme to alter its Km and /or Vmax values. Enzymes typically act under milder conditions of temperature and pH than non-enzyme chemical catalysts. Zymogens are the inactive precursors of enzyme. Nucleophilic groups can catalyze reactions through the transient formation of covalent bonds with the substrate. Transition state stabilization can significantly increase the activation energy for a reaction.

An inhibitor was added to an enzyme and the expected rate of the reaction was not detected and the substrate was not utilized at all. This inhibitor is (choose one answer only): Is un-competitive, meaning the inhibitor binds to a site near the active site. Is competitive, meaning the inhibitor binds directly to the same active site as the subtrate. Is non-competitive, meaning the inhibitor binds to site other than the active site as the subtrate. Is irreversible, meaning the inhibitor binds covalently to the enzyme keeping the enzyme inactive permanently.

Answer 2

Question

Chapter 2, Problem 23RAC

Summary Introduction

Introduction:

Enzymes are proteins that play various roles in the body. An enzyme can increase the rate of a reaction without even being utilized in the reaction. An enzyme has an active site to which reactant binds and catalyze the reaction to form a product.

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Answer 3

Question

Chapter 2, Problem 23RAC

Summary Introduction

Introduction:

Enzymes are proteins that play various roles in the body. An enzyme can increase the rate of a reaction without even being utilized in the reaction. An enzyme has an active site to which reactant binds and catalyze the reaction to form a product.

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Answer 4

Question

Chapter 2, Problem 23RAC

Summary Introduction

Introduction:

Enzymes are proteins that play various roles in the body. An enzyme can increase the rate of a reaction without even being utilized in the reaction. An enzyme has an active site to which reactant binds and catalyze the reaction to form a product.

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Answer 5

Chapter 2, Problem 23RAC

Summary Introduction

Introduction:

Enzymes are proteins that play various roles in the body. An enzyme can increase the rate of a reaction without even being utilized in the reaction. An enzyme has an active site to which reactant binds and catalyze the reaction to form a product.

Answer 6

Chapter 2, Problem 23RAC

Summary Introduction

Introduction:

Enzymes are proteins that play various roles in the body. An enzyme can increase the rate of a reaction without even being utilized in the reaction. An enzyme has an active site to which reactant binds and catalyze the reaction to form a product.

Answer 7

Chapter 2, Problem 23RAC

Summary Introduction

Introduction:

Enzymes are proteins that play various roles in the body. An enzyme can increase the rate of a reaction without even being utilized in the reaction. An enzyme has an active site to which reactant binds and catalyze the reaction to form a product.

Answer 8

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Answer 11

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Enzymes are proteins that play various roles in the body. An enzyme can increase the rate of a reaction without even being utilized in the reaction. An enzyme has an active site to which reactant binds and catalyze the reaction to form a product.

Solution Summary: The author explains that an enzyme increases the rate of a reaction without even being utilized in the reaction. Option (d) reactants must bind to an active site on the enzyme.

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Introduction:

Enzymes are proteins that play various roles in the body. An enzyme can increase the rate of a reaction without even being utilized in the reaction. An enzyme has an active site to which reactant binds and catalyze the reaction to form a product.

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Chapter 2 Solutions

Enzymes are proteins that play various roles in the body. An enzyme can increase the rate of a reaction without even being utilized in the reaction. An enzyme has an active site to which reactant binds and catalyze the reaction to form a product.

Solution Summary: The author explains that an enzyme increases the rate of a reaction without even being utilized in the reaction. Option (d) reactants must bind to an active site on the enzyme.

Concept explainers

Videos

Introduction: Enzymes are proteins that play various roles in the body. An enzyme can increase the rate of a reaction without even being utilized in the reaction. An enzyme has an active site to which reactant binds and catalyze the reaction to form a product.

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Chapter 2 Solutions

Introduction:

Enzymes are proteins that play various roles in the body. An enzyme can increase the rate of a reaction without even being utilized in the reaction. An enzyme has an active site to which reactant binds and catalyze the reaction to form a product.