(a) Interpretation: The enzymes at the three control points in the citric acid cycle are to be identified. Concept introduction: Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

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Answer 1

Question

Chapter 23, Problem 23.32E

Interpretation Introduction

(a)

Interpretation:

The enzymes at the three control points in the citric acid cycle are to be identified.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Interpretation Introduction

(b)

Interpretation:

An explanation as to how the control point inhibition by NADH and ATP enables the cell to be responsive to energy needs is to be stated.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Interpretation Introduction

(c)

Interpretation:

The benefit of the two control-point enzymes being activated by ADP to the regulation of the cell is to be stated.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

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Which enzyme is involved in the conversion of phosphoenolpyruvate to pyruvate? a. enolase b. ketolase c. pyruvate kinase d. pyruvate oxidase

In the electron transport chain, the hydrogen ions enter the inner compartment of mitochondria through special channels formed by A. ATP synthase. B. coenzyme A. C. acetyl CoA. D. oxygen.

Which best describes the role of enzymes in a chemical reaction? A. They lower the activation energy in the reaction. B. They prevent the reaction from occurring. C. They are produced by the reaction. D. They are consumed by the reaction.

Answer 2

Question

Chapter 23, Problem 23.32E

Interpretation Introduction

(a)

Interpretation:

The enzymes at the three control points in the citric acid cycle are to be identified.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Interpretation Introduction

(b)

Interpretation:

An explanation as to how the control point inhibition by NADH and ATP enables the cell to be responsive to energy needs is to be stated.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Interpretation Introduction

(c)

Interpretation:

The benefit of the two control-point enzymes being activated by ADP to the regulation of the cell is to be stated.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

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Answer 3

Question

Chapter 23, Problem 23.32E

Interpretation Introduction

(a)

Interpretation:

The enzymes at the three control points in the citric acid cycle are to be identified.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Interpretation Introduction

(b)

Interpretation:

An explanation as to how the control point inhibition by NADH and ATP enables the cell to be responsive to energy needs is to be stated.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Interpretation Introduction

(c)

Interpretation:

The benefit of the two control-point enzymes being activated by ADP to the regulation of the cell is to be stated.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

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Answer 4

Question

Chapter 23, Problem 23.32E

Interpretation Introduction

(a)

Interpretation:

The enzymes at the three control points in the citric acid cycle are to be identified.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Interpretation Introduction

(b)

Interpretation:

An explanation as to how the control point inhibition by NADH and ATP enables the cell to be responsive to energy needs is to be stated.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Interpretation Introduction

(c)

Interpretation:

The benefit of the two control-point enzymes being activated by ADP to the regulation of the cell is to be stated.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

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Answer 5

Chapter 23, Problem 23.32E

Interpretation Introduction

(a)

Interpretation:

The enzymes at the three control points in the citric acid cycle are to be identified.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Interpretation Introduction

(b)

Interpretation:

An explanation as to how the control point inhibition by NADH and ATP enables the cell to be responsive to energy needs is to be stated.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Interpretation Introduction

(c)

Interpretation:

The benefit of the two control-point enzymes being activated by ADP to the regulation of the cell is to be stated.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Answer 6

Chapter 23, Problem 23.32E

Interpretation Introduction

(a)

Interpretation:

The enzymes at the three control points in the citric acid cycle are to be identified.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Answer 7

Chapter 23, Problem 23.32E

Interpretation Introduction

(a)

Interpretation:

The enzymes at the three control points in the citric acid cycle are to be identified.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Answer 8

Interpretation Introduction

(b)

Interpretation:

An explanation as to how the control point inhibition by NADH and ATP enables the cell to be responsive to energy needs is to be stated.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Answer 9

Interpretation Introduction

(b)

Interpretation:

An explanation as to how the control point inhibition by NADH and ATP enables the cell to be responsive to energy needs is to be stated.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Answer 10

Interpretation Introduction

(c)

Interpretation:

The benefit of the two control-point enzymes being activated by ADP to the regulation of the cell is to be stated.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Answer 11

Interpretation Introduction

(c)

Interpretation:

The benefit of the two control-point enzymes being activated by ADP to the regulation of the cell is to be stated.

Concept introduction:

Citric acid cycle is the third stage in the oxidation of food. It begins with two carbon acetyl units. The acetyl units are formed by the oxidation of pyruvate obtained from glycolysis. It is termed as citric acid cycle as the key intermediate in the cycle is citric acid.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 23 - Why is glucose considered the pivotal compound in...Ch. 23 - Prob. 23.2E Ch. 23 - Prob. 23.3E Ch. 23 - Describe what is meant by the terms blood sugar...Ch. 23 - What range of concentrations for glucose in blood...Ch. 23 - Prob. 23.6E Ch. 23 - Prob. 23.7E Ch. 23 - Prob. 23.8E Ch. 23 - Prob. 23.9E Ch. 23 - Prob. 23.10E

Solution Summary: The author explains that the enzymes at the three control points in the citric acid cycle are listed below.

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Chapter 23 Solutions