Chapter 24, Problem 24.1E

How does the caloric value of fat compare with the caloric value of glycogen and starch?

Interpretation Introduction

Interpretation:

The comparison between the caloric value of fat and the caloric value of glycogen and starch is to be stated.

Concept introduction:

The total amount of heat which is needed to elevate the temperature of $1\text{g}$ water by $1°\text{C}$ is known as a calorie. The energy value that corresponds to the foodstuffs and measured in calories is known as the caloric value.

Answer to Problem 24.1E

The caloric value of fat is just double the caloric value of glycogen and starch.

Explanation of Solution

Fat is a triglyceride which is a significant and primary source of energy in the body. The caloric value of fat is expressed as $9\text{calories}$ per gram of fat. The caloric value of glycogen and starch is expressed as $4\text{calories}$ per gram of glycogen and starch.

The caloric value of fat is just twice the caloric value of glycogen and starch. Therefore, the concentration of fat is high and they are more responsible for the storage of energy in the body as compared to glycogen and starch.

Conclusion

The comparison between the caloric value of fat and the caloric value of glycogen and starch has been stated above.