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Biology Chapter 2.2

Biology Chapter 2.2 Terms and Definitions

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 plants 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: conoverc20