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biology 2.2
Question | Answer |
---|---|
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. |