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Biology Chap.2.2

Basic terms for Honors Biology, Grade 9

The ability to do work Energy
When one or more substances change to produce one or more different substances Chemical Reaction
Any substance that undergoes a chemical change in a given reaction Reactant
A substance obtained from another substance through chemical change Product
the term used to describe all of the chemical reactions that occur in an organism Metabolism
The amount of energy needed to start a reaction Activation Energy
Certain chemical substances that reduce the amount of activation energy that is needed for a reaction to take place Catalyst
A protein or RNA molecule that speeds up metabolic reactions without being permanently changed or destroyed Enzyme
The reactions in which electrons are transferred between atoms -includes two types Redox Reaction
Where the reactant loses one or more electrons, thus becoming more positive in charge Oxidation Reaction
Where the reactant gains one or more electrons, thus becoming negative in charge Reduction Reaction
Created by: EmilyEdwards