Here's why:
* Enzymes are biological catalysts: They speed up chemical reactions without being consumed in the process.
* Chemical digestion involves breaking down large food molecules: Enzymes specifically target these large molecules (like carbohydrates, proteins, and fats) and break them down into smaller, more easily absorbable molecules.
* Each enzyme has a specific function: There are different types of enzymes that break down different types of food molecules. For example, amylase breaks down carbohydrates, protease breaks down proteins, and lipase breaks down fats.
So, while other molecules play a role in digestion (like water and acids), enzymes are the key players in the chemical breakdown of food.
