The major fuel for skeletal muscle in an active state has to be determined. Concept introduction: Glucose and fatty acids, both are major sources of fuels. However, fatty acids yield approximately 2.5 times as much energy per gram as carbohydrates (glucose). Fatty acids are comparatively much better than glucose as energy-storing molecules. In the body, some organs prefer to use glucose as a source of energy while functioning while some prefer fatty acids. There are also certain organs which prefer both.

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Chapter 25, Problem 25.49EP

(a)

Interpretation Introduction

Interpretation:

The major fuel for skeletal muscle in an active state has to be determined.

Concept introduction:

Glucose and fatty acids, both are major sources of fuels. However, fatty acids yield approximately 2.5 times as much energy per gram as carbohydrates (glucose). Fatty acids are comparatively much better than glucose as energy-storing molecules. In the body, some organs prefer to use glucose as a source of energy while functioning while some prefer fatty acids. There are also certain organs which prefer both.

(b)

Interpretation Introduction

Interpretation:

The major fuel for skeletal muscle in a resting state has to be determined.

Concept introduction:

Glucose and fatty acids, both are major sources of fuels. However, fatty acids yield approximately 2.5 times as much energy per gram as carbohydrates (glucose). Fatty acids are comparatively much better than glucose as energy-storing molecules. In the body, some organs prefer to use glucose as a source of energy while functioning while some prefer fatty acids. There are also certain organs which prefer both.

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