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Biology Chap.2.2
Basic terms for Honors Biology, Grade 9
| Question | Answer |
|---|---|
| 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 |