Chemical Changes and Reactions — Question 11

Digestion of food in our body is an example of decomposition reaction.

The starch present in the food we eat decomposes into glucose and sugar. Proteins undergo decomposition to form amino acids. Fats and oils are decomposed to fatty acids and finally oxidized by respiration into carbon dioxide and water.

Starch $\xrightarrow{\text{Enzymes}}$ Glucose $\xrightarrow{\text{[O]}}$ CO₂ + H₂O + Energy