ABSTRACT
After reading the following chapter and undertaking personal study, you should be able to:
Define the term ‘energy’.
List various forms of energy and distinguish between kinetic and potential energy.
Describe the principle of the conservation of energy and identify examples of energy conversions.
Identify the units used to measure energy and use kilojoules (kJ) to compare the energy values of different foods and the energy expended in different activities.
Describe the adenosine triphosphate (ATP) molecule and identify its importance in the body.
Outline the energy-producing reactions of the body (cellular/internal respiration), including glycolysis, the conversion of pyruvic acid to acetyl co-enzyme A (acetyl-CoA), the Krebs cycle and the electron-transport chain.
Outline fat and protein catabolism and briefly describe some of the potential consequences of using fat as a principal source of energy.
