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Biology Chapter 2.2

Energy The capacity to do work.
Chemical Reaction The process by which one or more substances change to produce one or more different substances.
Reactant A substance or molecule that participates in a chemical reaction.
Product A substance that forms in a chemical reaction.
Metabolism The sum of all chemical processes that occur in an organism.
Activation Energy The minimum amount of energy required to start a chemical reaction.
Catalyst A substance that changes the rate of a chemical reaction without being consumed or changed significantly.
Enzyme A type of protein or RNA molecule that speeds up metabolic reactions in plant and animals without being permanently changed or destroyed.
Redox Reaction A reaction in which electrons are transferred between atoms; also known as an oxidation-reduction reaction.
Oxidation Reaction A chemical reaction in which a reactant loses one or more electrons such that the reactant becomes more positive in charge.
Reduction Reaction A chemical change in which electrons are gained, either by the removal of oxygen, the addition of hydrogen, or the addition of electrons.
Created by: DragonT20