To indicate whether the intermediate fructose 6 − phosphate in the glycolysis pathway is a C 6 molecule or a C 3 molecule. Concept introduction: Glycolysis is the metabolic pathway that breaks down a glucose molecule and converts it into two pyruvate molecules along with the production of two ATP molecules and NADH coenzymes. The block diagram to represent an overview of glycolysis is as follows: From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present. a) Steps 1 to 3 represents a six-carbon stage ( C 6 stage ) . b) Steps 4 to 10 represent a three-carbon stage ( C 3 stage ) . In the C 6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C 6 molecules. The phosphate groups are present in the intermediates. In the C 3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C 3 molecules.

Question

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Answer 1

Question

Chapter 24, Problem 24.9EP

(a)

Interpretation Introduction

Interpretation: To indicate whether the intermediate fructose 6−phosphate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: Glycolysis is the metabolic pathway that breaks down a glucose molecule and converts it into two pyruvate molecules along with the production of two ATP molecules and NADH coenzymes.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(a)

Expert Solution

Answer to Problem 24.9EP

The intermediate fructose 6−phosphate is a C6 molecule.

Explanation of Solution

The structure of fructose 6−phosphate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 2

Here, General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 3 denotes the PO32− unit.

The intermediate fructose 6−phosphate is formed in the C6 stage and it is the phosphorylated derivative of fructose. Therefore, the intermediate fructose 6−phosphate is a C6 molecule.

Conclusion

The intermediate fructose 6−phosphate is formed in the C6 stage and it is the phosphorylated derivative of fructose. It contains six carbon atoms. Therefore, it is a C6 molecule.

(b)

Interpretation Introduction

Interpretation: To indicate whether the intermediate phosphoenolpyruvate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(b)

Expert Solution

Answer to Problem 24.9EP

Phosphoenolpyruvate is a C3 molecule.

Explanation of Solution

The structure of phosphoenolpyruvate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 5

Phosphoenolpyruvate is formed in the C3 stage and it is the phosphorylated derivative of pyruvate. Therefore, it is a C3 molecule.

Conclusion

Phosphoenolpyruvate is formed in the C3 stage and it is the phosphorylated derivative of pyruvate. It contains three carbon atoms. Therefore, it is a C3 molecule.

(c)

Interpretation Introduction

Interpretation: To indicate whether the intermediate 3−Phosphoglycerate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(c)

Expert Solution

Answer to Problem 24.9EP

The intermediate 3−Phosphoglycerate is a C3 molecule.

Explanation of Solution

The structure of 3−phosphoglycerate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 7

The intermediate 3−phosphoglycerate is formed in the C3 stage and it is the phosphorylated derivative of glycerate. Therefore, it is a C3 molecule.

Conclusion

The intermediate 3−Phosphoglycerate is formed in the C3 stage and it is the phosphorylated derivative of glycerate. It contains six carbon atoms. Therefore, it is a C3 molecule.

(d)

Interpretation Introduction

Interpretation: To indicate whether the intermediate dihydroxyacetone phosphate

in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(d)

Expert Solution

Answer to Problem 24.9EP

Dihydroxyacetone phosphate is a C3 molecule.

Explanation of Solution

The structure of dihydroxyacetone phosphate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 9

The intermediate dihydroxyacetone phosphate is formed in the C3 stage and it is the phosphorylated derivative of dihydroxyacetone. Therefore, it is a C3 molecule.

Conclusion

Dihydroxyacetone phosphate is formed in the C3 stage and it is the phosphorylated derivative of dihydroxyacetone. It contains three carbon atoms. Therefore, it is a C3 molecule.

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Answer 2

Question

Chapter 24, Problem 24.9EP

(a)

Interpretation Introduction

Interpretation: To indicate whether the intermediate fructose 6−phosphate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: Glycolysis is the metabolic pathway that breaks down a glucose molecule and converts it into two pyruvate molecules along with the production of two ATP molecules and NADH coenzymes.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(a)

Expert Solution

Answer to Problem 24.9EP

The intermediate fructose 6−phosphate is a C6 molecule.

Explanation of Solution

The structure of fructose 6−phosphate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 2

Here, General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 3 denotes the PO32− unit.

The intermediate fructose 6−phosphate is formed in the C6 stage and it is the phosphorylated derivative of fructose. Therefore, the intermediate fructose 6−phosphate is a C6 molecule.

Conclusion

The intermediate fructose 6−phosphate is formed in the C6 stage and it is the phosphorylated derivative of fructose. It contains six carbon atoms. Therefore, it is a C6 molecule.

(b)

Interpretation Introduction

Interpretation: To indicate whether the intermediate phosphoenolpyruvate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(b)

Expert Solution

Answer to Problem 24.9EP

Phosphoenolpyruvate is a C3 molecule.

Explanation of Solution

The structure of phosphoenolpyruvate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 5

Phosphoenolpyruvate is formed in the C3 stage and it is the phosphorylated derivative of pyruvate. Therefore, it is a C3 molecule.

Conclusion

Phosphoenolpyruvate is formed in the C3 stage and it is the phosphorylated derivative of pyruvate. It contains three carbon atoms. Therefore, it is a C3 molecule.

(c)

Interpretation Introduction

Interpretation: To indicate whether the intermediate 3−Phosphoglycerate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(c)

Expert Solution

Answer to Problem 24.9EP

The intermediate 3−Phosphoglycerate is a C3 molecule.

Explanation of Solution

The structure of 3−phosphoglycerate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 7

The intermediate 3−phosphoglycerate is formed in the C3 stage and it is the phosphorylated derivative of glycerate. Therefore, it is a C3 molecule.

Conclusion

The intermediate 3−Phosphoglycerate is formed in the C3 stage and it is the phosphorylated derivative of glycerate. It contains six carbon atoms. Therefore, it is a C3 molecule.

(d)

Interpretation Introduction

Interpretation: To indicate whether the intermediate dihydroxyacetone phosphate

in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(d)

Expert Solution

Answer to Problem 24.9EP

Dihydroxyacetone phosphate is a C3 molecule.

Explanation of Solution

The structure of dihydroxyacetone phosphate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 9

The intermediate dihydroxyacetone phosphate is formed in the C3 stage and it is the phosphorylated derivative of dihydroxyacetone. Therefore, it is a C3 molecule.

Conclusion

Dihydroxyacetone phosphate is formed in the C3 stage and it is the phosphorylated derivative of dihydroxyacetone. It contains three carbon atoms. Therefore, it is a C3 molecule.

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Answer 3

Question

Chapter 24, Problem 24.9EP

(a)

Interpretation Introduction

Interpretation: To indicate whether the intermediate fructose 6−phosphate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: Glycolysis is the metabolic pathway that breaks down a glucose molecule and converts it into two pyruvate molecules along with the production of two ATP molecules and NADH coenzymes.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(a)

Expert Solution

Answer to Problem 24.9EP

The intermediate fructose 6−phosphate is a C6 molecule.

Explanation of Solution

The structure of fructose 6−phosphate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 2

Here, General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 3 denotes the PO32− unit.

The intermediate fructose 6−phosphate is formed in the C6 stage and it is the phosphorylated derivative of fructose. Therefore, the intermediate fructose 6−phosphate is a C6 molecule.

Conclusion

The intermediate fructose 6−phosphate is formed in the C6 stage and it is the phosphorylated derivative of fructose. It contains six carbon atoms. Therefore, it is a C6 molecule.

(b)

Interpretation Introduction

Interpretation: To indicate whether the intermediate phosphoenolpyruvate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(b)

Expert Solution

Answer to Problem 24.9EP

Phosphoenolpyruvate is a C3 molecule.

Explanation of Solution

The structure of phosphoenolpyruvate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 5

Phosphoenolpyruvate is formed in the C3 stage and it is the phosphorylated derivative of pyruvate. Therefore, it is a C3 molecule.

Conclusion

Phosphoenolpyruvate is formed in the C3 stage and it is the phosphorylated derivative of pyruvate. It contains three carbon atoms. Therefore, it is a C3 molecule.

(c)

Interpretation Introduction

Interpretation: To indicate whether the intermediate 3−Phosphoglycerate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(c)

Expert Solution

Answer to Problem 24.9EP

The intermediate 3−Phosphoglycerate is a C3 molecule.

Explanation of Solution

The structure of 3−phosphoglycerate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 7

The intermediate 3−phosphoglycerate is formed in the C3 stage and it is the phosphorylated derivative of glycerate. Therefore, it is a C3 molecule.

Conclusion

The intermediate 3−Phosphoglycerate is formed in the C3 stage and it is the phosphorylated derivative of glycerate. It contains six carbon atoms. Therefore, it is a C3 molecule.

(d)

Interpretation Introduction

Interpretation: To indicate whether the intermediate dihydroxyacetone phosphate

in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(d)

Expert Solution

Answer to Problem 24.9EP

Dihydroxyacetone phosphate is a C3 molecule.

Explanation of Solution

The structure of dihydroxyacetone phosphate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 9

The intermediate dihydroxyacetone phosphate is formed in the C3 stage and it is the phosphorylated derivative of dihydroxyacetone. Therefore, it is a C3 molecule.

Conclusion

Dihydroxyacetone phosphate is formed in the C3 stage and it is the phosphorylated derivative of dihydroxyacetone. It contains three carbon atoms. Therefore, it is a C3 molecule.

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Answer 4

Question

Chapter 24, Problem 24.9EP

(a)

Interpretation Introduction

Interpretation: To indicate whether the intermediate fructose 6−phosphate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: Glycolysis is the metabolic pathway that breaks down a glucose molecule and converts it into two pyruvate molecules along with the production of two ATP molecules and NADH coenzymes.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(a)

Expert Solution

Answer to Problem 24.9EP

The intermediate fructose 6−phosphate is a C6 molecule.

Explanation of Solution

The structure of fructose 6−phosphate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 2

Here, General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 3 denotes the PO32− unit.

The intermediate fructose 6−phosphate is formed in the C6 stage and it is the phosphorylated derivative of fructose. Therefore, the intermediate fructose 6−phosphate is a C6 molecule.

Conclusion

The intermediate fructose 6−phosphate is formed in the C6 stage and it is the phosphorylated derivative of fructose. It contains six carbon atoms. Therefore, it is a C6 molecule.

(b)

Interpretation Introduction

Interpretation: To indicate whether the intermediate phosphoenolpyruvate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(b)

Expert Solution

Answer to Problem 24.9EP

Phosphoenolpyruvate is a C3 molecule.

Explanation of Solution

The structure of phosphoenolpyruvate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 5

Phosphoenolpyruvate is formed in the C3 stage and it is the phosphorylated derivative of pyruvate. Therefore, it is a C3 molecule.

Conclusion

Phosphoenolpyruvate is formed in the C3 stage and it is the phosphorylated derivative of pyruvate. It contains three carbon atoms. Therefore, it is a C3 molecule.

(c)

Interpretation Introduction

Interpretation: To indicate whether the intermediate 3−Phosphoglycerate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(c)

Expert Solution

Answer to Problem 24.9EP

The intermediate 3−Phosphoglycerate is a C3 molecule.

Explanation of Solution

The structure of 3−phosphoglycerate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 7

The intermediate 3−phosphoglycerate is formed in the C3 stage and it is the phosphorylated derivative of glycerate. Therefore, it is a C3 molecule.

Conclusion

The intermediate 3−Phosphoglycerate is formed in the C3 stage and it is the phosphorylated derivative of glycerate. It contains six carbon atoms. Therefore, it is a C3 molecule.

(d)

Interpretation Introduction

Interpretation: To indicate whether the intermediate dihydroxyacetone phosphate

in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(d)

Expert Solution

Answer to Problem 24.9EP

Dihydroxyacetone phosphate is a C3 molecule.

Explanation of Solution

The structure of dihydroxyacetone phosphate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 9

The intermediate dihydroxyacetone phosphate is formed in the C3 stage and it is the phosphorylated derivative of dihydroxyacetone. Therefore, it is a C3 molecule.

Conclusion

Dihydroxyacetone phosphate is formed in the C3 stage and it is the phosphorylated derivative of dihydroxyacetone. It contains three carbon atoms. Therefore, it is a C3 molecule.

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Answer 5

Chapter 24, Problem 24.9EP

(a)

Interpretation Introduction

Interpretation: To indicate whether the intermediate fructose 6−phosphate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: Glycolysis is the metabolic pathway that breaks down a glucose molecule and converts it into two pyruvate molecules along with the production of two ATP molecules and NADH coenzymes.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(a)

Expert Solution

Answer to Problem 24.9EP

The intermediate fructose 6−phosphate is a C6 molecule.

Explanation of Solution

The structure of fructose 6−phosphate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 2

Here, General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 3 denotes the PO32− unit.

The intermediate fructose 6−phosphate is formed in the C6 stage and it is the phosphorylated derivative of fructose. Therefore, the intermediate fructose 6−phosphate is a C6 molecule.

Conclusion

The intermediate fructose 6−phosphate is formed in the C6 stage and it is the phosphorylated derivative of fructose. It contains six carbon atoms. Therefore, it is a C6 molecule.

(b)

Interpretation Introduction

Interpretation: To indicate whether the intermediate phosphoenolpyruvate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(b)

Expert Solution

Answer to Problem 24.9EP

Phosphoenolpyruvate is a C3 molecule.

Explanation of Solution

The structure of phosphoenolpyruvate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 5

Phosphoenolpyruvate is formed in the C3 stage and it is the phosphorylated derivative of pyruvate. Therefore, it is a C3 molecule.

Conclusion

Phosphoenolpyruvate is formed in the C3 stage and it is the phosphorylated derivative of pyruvate. It contains three carbon atoms. Therefore, it is a C3 molecule.

(c)

Interpretation Introduction

Interpretation: To indicate whether the intermediate 3−Phosphoglycerate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(c)

Expert Solution

Answer to Problem 24.9EP

The intermediate 3−Phosphoglycerate is a C3 molecule.

Explanation of Solution

The structure of 3−phosphoglycerate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 7

The intermediate 3−phosphoglycerate is formed in the C3 stage and it is the phosphorylated derivative of glycerate. Therefore, it is a C3 molecule.

Conclusion

The intermediate 3−Phosphoglycerate is formed in the C3 stage and it is the phosphorylated derivative of glycerate. It contains six carbon atoms. Therefore, it is a C3 molecule.

(d)

Interpretation Introduction

Interpretation: To indicate whether the intermediate dihydroxyacetone phosphate

in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(d)

Expert Solution

Answer to Problem 24.9EP

Dihydroxyacetone phosphate is a C3 molecule.

Explanation of Solution

The structure of dihydroxyacetone phosphate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 9

The intermediate dihydroxyacetone phosphate is formed in the C3 stage and it is the phosphorylated derivative of dihydroxyacetone. Therefore, it is a C3 molecule.

Conclusion

Dihydroxyacetone phosphate is formed in the C3 stage and it is the phosphorylated derivative of dihydroxyacetone. It contains three carbon atoms. Therefore, it is a C3 molecule.

Answer 6

Chapter 24, Problem 24.9EP

(a)

Interpretation Introduction

Interpretation: To indicate whether the intermediate fructose 6−phosphate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: Glycolysis is the metabolic pathway that breaks down a glucose molecule and converts it into two pyruvate molecules along with the production of two ATP molecules and NADH coenzymes.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(a)

Expert Solution

Answer to Problem 24.9EP

The intermediate fructose 6−phosphate is a C6 molecule.

Explanation of Solution

The structure of fructose 6−phosphate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 2

Here, General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 3 denotes the PO32− unit.

The intermediate fructose 6−phosphate is formed in the C6 stage and it is the phosphorylated derivative of fructose. Therefore, the intermediate fructose 6−phosphate is a C6 molecule.

Conclusion

The intermediate fructose 6−phosphate is formed in the C6 stage and it is the phosphorylated derivative of fructose. It contains six carbon atoms. Therefore, it is a C6 molecule.

Answer 7

Chapter 24, Problem 24.9EP

(a)

Interpretation Introduction

Interpretation: To indicate whether the intermediate fructose 6−phosphate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: Glycolysis is the metabolic pathway that breaks down a glucose molecule and converts it into two pyruvate molecules along with the production of two ATP molecules and NADH coenzymes.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

Answer 8

(a)

Expert Solution

Answer to Problem 24.9EP

The intermediate fructose 6−phosphate is a C6 molecule.

Answer 9

(a)

Expert Solution

Answer 10

(a)

Expert Solution

Answer 11

Expert Solution

Answer 12

Explanation of Solution

The structure of fructose 6−phosphate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 2

Here, General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 3 denotes the PO32− unit.

The intermediate fructose 6−phosphate is formed in the C6 stage and it is the phosphorylated derivative of fructose. Therefore, the intermediate fructose 6−phosphate is a C6 molecule.

Answer 13

Conclusion

The intermediate fructose 6−phosphate is formed in the C6 stage and it is the phosphorylated derivative of fructose. It contains six carbon atoms. Therefore, it is a C6 molecule.

Answer 14

(b)

Interpretation Introduction

Interpretation: To indicate whether the intermediate phosphoenolpyruvate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(b)

Expert Solution

Answer to Problem 24.9EP

Phosphoenolpyruvate is a C3 molecule.

Explanation of Solution

The structure of phosphoenolpyruvate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 5

Phosphoenolpyruvate is formed in the C3 stage and it is the phosphorylated derivative of pyruvate. Therefore, it is a C3 molecule.

Conclusion

Phosphoenolpyruvate is formed in the C3 stage and it is the phosphorylated derivative of pyruvate. It contains three carbon atoms. Therefore, it is a C3 molecule.

Answer 15

(b)

Interpretation Introduction

Interpretation: To indicate whether the intermediate phosphoenolpyruvate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

Answer 16

(b)

Expert Solution

Answer to Problem 24.9EP

Phosphoenolpyruvate is a C3 molecule.

Answer 17

(b)

Expert Solution

Answer 18

(b)

Expert Solution

Answer 19

Expert Solution

Answer 20

Explanation of Solution

The structure of phosphoenolpyruvate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 5

Phosphoenolpyruvate is formed in the C3 stage and it is the phosphorylated derivative of pyruvate. Therefore, it is a C3 molecule.

Answer 21

Conclusion

Phosphoenolpyruvate is formed in the C3 stage and it is the phosphorylated derivative of pyruvate. It contains three carbon atoms. Therefore, it is a C3 molecule.

Answer 22

(c)

Interpretation Introduction

Interpretation: To indicate whether the intermediate 3−Phosphoglycerate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(c)

Expert Solution

Answer to Problem 24.9EP

The intermediate 3−Phosphoglycerate is a C3 molecule.

Explanation of Solution

The structure of 3−phosphoglycerate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 7

The intermediate 3−phosphoglycerate is formed in the C3 stage and it is the phosphorylated derivative of glycerate. Therefore, it is a C3 molecule.

Conclusion

The intermediate 3−Phosphoglycerate is formed in the C3 stage and it is the phosphorylated derivative of glycerate. It contains six carbon atoms. Therefore, it is a C3 molecule.

Answer 23

(c)

Interpretation Introduction

Interpretation: To indicate whether the intermediate 3−Phosphoglycerate in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

Answer 24

(c)

Expert Solution

Answer to Problem 24.9EP

The intermediate 3−Phosphoglycerate is a C3 molecule.

Answer 25

(c)

Expert Solution

Answer 26

(c)

Expert Solution

Answer 27

Expert Solution

Answer 28

Explanation of Solution

The structure of 3−phosphoglycerate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 7

The intermediate 3−phosphoglycerate is formed in the C3 stage and it is the phosphorylated derivative of glycerate. Therefore, it is a C3 molecule.

Answer 29

Conclusion

The intermediate 3−Phosphoglycerate is formed in the C3 stage and it is the phosphorylated derivative of glycerate. It contains six carbon atoms. Therefore, it is a C3 molecule.

Answer 30

(d)

Interpretation Introduction

Interpretation: To indicate whether the intermediate dihydroxyacetone phosphate

in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

(d)

Expert Solution

Answer to Problem 24.9EP

Dihydroxyacetone phosphate is a C3 molecule.

Explanation of Solution

The structure of dihydroxyacetone phosphate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 9

The intermediate dihydroxyacetone phosphate is formed in the C3 stage and it is the phosphorylated derivative of dihydroxyacetone. Therefore, it is a C3 molecule.

Conclusion

Dihydroxyacetone phosphate is formed in the C3 stage and it is the phosphorylated derivative of dihydroxyacetone. It contains three carbon atoms. Therefore, it is a C3 molecule.

Answer 31

(d)

Interpretation Introduction

Interpretation: To indicate whether the intermediate dihydroxyacetone phosphate

in the glycolysis pathway is a C6 molecule or a C3 molecule.

Concept introduction: In the glycolysis metabolic pathway, a glucose molecule is converted into two pyruvate molecules. Two ATP molecules and NADH coenzymes are produced along with pyruvate.

The block diagram to represent an overview of glycolysis is as follows:

From the above diagram, it is concluded that in the overall process of glycolysis, two stages are present.

a) Steps 1 to 3 represents a six-carbon stage (C6 stage).

b) Steps 4 to 10 represent a three-carbon stage (C3 stage).

In the C6 stage, the intermediates are derivatives of either glucose or fructose. Glucose and fructose contain six carbon atoms. Therefore, they are C6 molecules. The phosphate groups are present in the intermediates.

In the C3 stage, the intermediates are phosphorylated derivatives of glyceraldehyde, pyruvate, glycerate, or dihydroxyacetone, which are derivatives of either acetone or glycerol. Acetone and glycerol contain three carbon atoms. Therefore, they are C3 molecules.

Answer 32

(d)

Expert Solution

Answer to Problem 24.9EP

Dihydroxyacetone phosphate is a C3 molecule.

Answer 33

(d)

Expert Solution

Answer 34

(d)

Expert Solution

Answer 35

Expert Solution

Answer 36

Explanation of Solution

The structure of dihydroxyacetone phosphate is as follows:

General, Organic, and Biological Chemistry Seventh Edition, Chapter 24, Problem 24.9EP , additional homework tip 9

The intermediate dihydroxyacetone phosphate is formed in the C3 stage and it is the phosphorylated derivative of dihydroxyacetone. Therefore, it is a C3 molecule.

Answer 37

Conclusion

Dihydroxyacetone phosphate is formed in the C3 stage and it is the phosphorylated derivative of dihydroxyacetone. It contains three carbon atoms. Therefore, it is a C3 molecule.