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biology 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 participtes in a chemical reaction
product a substance that forms in a chemical reaction
metabolism the sum of all chemical processes 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
enzyme type of protein or rna molecule that speeds up metabolic reactions
redox reaction electrons are transferred between atoms also known as an oxidation reduction resction
oxidation reaction reactant loses one or more electrons and reactant becomes positive.
reduction reaction electrons are gained either by the removal of oxygen, the addition of hydrogen or addition of electrons.
Created by: ClarkH20