Organisms contain compounds such as proteins, starches, and fats. the chemical bonds in these compounds can be a source of

The mentioned compounds can be a source of energy in distinct ways.

Explanation:

The digestion of carbohydrates takes place into the most basic monosaccharides like fructose, glucose, and maltose. Glucose is the prime energy source in life. Glucose can be utilized as energy when the body dissociates it down by glycolysis and mediates the end component, that is, acetyl-CoA in the TCA cycle.  

These two procedures take part in the generation of energy, that is, ATP and the reducing components like FAD and NAD. These reducing components are then utilized in the ETC to generate more ATP. On the other hand, energy is obtained from the fat by the process known as beta-oxidation in which the chemical bonds of fats are oxidized to generate energy.  

The end-component of beta-oxidation, that is, acetyl-CoA moves into the TCA cycle and generates ATP and the reducing components, which are later utilized in the ETC to generate more energy.  

Lastly, the digestion of proteins takes place in its most basic form, that is, amino acids. These amino acids on the basis of their type are either ketogenic or glucogenic. The glucogenic amino acids are utilized to generate glucose by a procedure known as gluconeogenesis. The glucose produced from these amino acids can further be utilized as energy by glycolysis, TCA cycle, and ETC.