Why is digestion called a catabolic process

1.	Why is digestion called a catabolic process
Answer» Catabolism is the degradative processes of metabolism. It concerned with the breakdown of complex food molecules to simple ones, with a concomitant release of free energy. For example, carbohydrates are complex molecules, breakdown into simple molecules of carbon dioxide and water with concomitant release free energy as a form of ATP through a series of catabolic reactions. Respiration involves the oxidation carbohydrates, proteins and fats etc to release energy. Since bonds in these substances are broken down to release energy, respiration is considered as a catabolic process.

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