AP BIOLOGY

Detailed explanation-1: -Metabolism (pronounced: meh-TAB-uh-liz-um) is the chemical reactions in the body’s cells that change food into energy. Our bodies need this energy to do everything from moving to thinking to growing. Specific proteins in the body control the chemical reactions of metabolism.

Detailed explanation-2: -By definition, an organism’s metabolism describes all of the different chemical reactions that take place within the organism. These reactions can be anabolic, building up complex molecules from simple ones. They can also be catabolic, breaking down complex molecules to release energy.

Detailed explanation-3: -Chemical reactions that take place inside living things are called biochemical reactions. The sum of all the biochemical reactions in an organism is referred to as metabolism.

Detailed explanation-4: -Two types of metabolic reactions take place in the cell: ‘building up’ (anabolism) and ‘breaking down’ (catabolism). Catabolic reactions give out energy. They are exergonic. In a catabolic reaction large molecules are broken down into smaller ones.

Detailed explanation-5: -Catabolism is the set of metabolic processes that break down large molecules. These include breaking down and oxidizing food molecules. The purpose of the catabolic reactions is to provide the energy and components needed by anabolic reactions which build molecules.