Chapter 24, Problem 24.83EP

(a)

Interpretation Introduction

Interpretation:

Whether the enzyme Hexokinase is involved in glycolysis or gluconeogenesis or in both has to be determined.

Concept Introduction:

Glycolysis:

It is the metabolic pathway by which glucose (a $C_6$ molecule) is converted into two molecules of pyruvate (a $C_3$ molecule), chemical energy in the form of ATP is produced, and NADH-reduced coenzymes are produced.

Gluconeogenesis:

Gluconeogenesis is the metabolic pathway by which glucose is synthesized from non-carbohydrate materials.

(b)

Interpretation Introduction

Interpretation:

Whether the enzyme Phosphofructokinase is involved in glycolysis or gluconeogenesis or in both has to be determined.

Concept Introduction:

Glycolysis:

It is the metabolic pathway by which glucose (a $C_6$ molecule) is converted into two molecules of pyruvate (a $C_3$ molecule), chemical energy in the form of ATP is produced, and NADH-reduced coenzymes are produced.

Gluconeogenesis:

Gluconeogenesis is the metabolic pathway by which glucose is synthesized from non-carbohydrate materials.

(c)

Interpretation Introduction

Interpretation:

Whether the enzyme Pyruvate carboxylase is involved in glycolysis or gluconeogenesis or in both has to be determined.

Concept Introduction:

Glycolysis:

It is the metabolic pathway by which glucose (a $C_6$ molecule) is converted into two molecules of pyruvate (a $C_3$ molecule), chemical energy in the form of ATP is produced, and NADH-reduced coenzymes are produced.

Gluconeogenesis:

Gluconeogenesis is the metabolic pathway by which glucose is synthesized from non-carbohydrate materials.

(d)

Interpretation Introduction

Interpretation:

Whether the enzyme Phosphoglyceromutase is involved in glycolysis or gluconeogenesis or in both has to be determined.

Concept Introduction:

Glycolysis:

It is the metabolic pathway by which glucose (a $C_6$ molecule) is converted into two molecules of pyruvate (a $C_3$ molecule), chemical energy in the form of ATP is produced, and NADH-reduced coenzymes are produced.

Gluconeogenesis:

Gluconeogenesis is the metabolic pathway by which glucose is synthesized from non-carbohydrate materials.