EVERYDAY SCIENCE

Detailed explanation-1: -The complex molecules of carbohydrates, proteins, and fats are transformed by chemical digestion into smaller molecules that can be absorbed and utilized by the cells. Chemical digestion, through a process called hydrolysis, uses water and digestive enzymes to break down the complex molecules.

Detailed explanation-2: -Catabolism is the process of breaking down complex molecules into simpler molecules. Catabolic reactions often employ hydrolysis in order to break down complex molecules by adding a molecule of water to the simple molecules that are the products.

Detailed explanation-3: -The proteins, lipids, and polysaccharides that make up most of the food we eat must be broken down into smaller molecules before our cells can use them-either as a source of energy or as building blocks for other molecules.

Detailed explanation-4: -Digestion is the process of conversion of complex food substances into simpler absorbable substances. It is carried out by our digestive system by mechanical and biochemical methods.