bio lab definitions metabolism.docx - Amanda Perkins BIO...

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Amanda Perkins BIO Lab Pickens Lab Definitions Metabolism: the process by which your body converts what you eat and drink into energy. During this complex biochemical process, calories in food and beverages are combined with oxygen to release the energy your body needs to function. Catabolic (degradation): break down substances. Anabolic (synthesis): build new substances. Enzyme: macromolecular biological catalysts that accelerate chemical reactions. Activation energy: energy required to start a chemical reaction. Substrate: natural environment in which an organism lives. Surface or medium on which an organism grows or is attached. Enzyme-substrate complex: temporary molecule formed when an enzyme comes into perfect contact with its substrate. Without its substrate an enzyme is a slightly different shape. Active site: the region of an enzyme where substrate molecules bind and undergo a chemical reaction . The active site consists of residues that form temporary bonds with the substrate ( binding site

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