AP BIOLOGY

Detailed explanation-1: -Anabolic reactions use energy to build complex molecules from simpler organic compounds (e.g., proteins from amino acids, carbohydrates from sugars, fats from fatty acids and glycerol); catabolic reactions break complex molecules down into simpler ones, releasing chemical energy.

Detailed explanation-2: -Anabolic reactions involve the building of larger, complex molecules from smaller, simpler ones, and require an input of energy. Catabolic reactions are the opposite of anabolic reactions, and break the chemical bonds in larger, more complex molecules.

Detailed explanation-3: -ANABOLIC reactions BUILD UP complex molecules required by the cell. Anabolic reactions depend on catabolic reactions to provide energy and materials. METABOLISM is the working together of catabolic and anabolic reactions.

Detailed explanation-4: -Anabolic reactions, or biosynthetic reactions, synthesize larger molecules from smaller constituent parts, using ATP as the energy source for these reactions. Anabolic reactions build bone, muscle mass, and new proteins, fats, and nucleic acids.

Detailed explanation-5: -Catabolic reactions break down complex chemicals into simpler ones and are associated with energy release. Anabolic processes build complex molecules out of simpler ones and require energy.