| A | B |
|---|
| enzyme | biological catalyst |
| activation energy | the amount of energy needed to climb the hill in a reaction |
| exothermic reaction | a reaction in which the products have lower bond energy and energy is released |
| endothermic reaction | a reaction in which the products have higher energy and the energy is absorbed |
| reactant | the starting material in a chemical reaction |
| product | what is made during the chemical reaction (ending materials) |
| enzyme-substrate complex | substrate binds to enzyme in active site and bonds are weakened |
| coenzyme | a vitamin or other organic molecule needed for the reaction to occur |
| catalyst | a substance that decreases the activation energy needed to start a reaction |
| chemical reactions | change substances into different substances by breaking and forming chemical bonds |
| substrates | reactants in an enzyme catalyzed reaction |
| inhibitor | a substance that binds to the enzyme and prevents it from binding to substrate |
| temperature, pH | factors affecting enzyme activity |
| homeostasis | living organisms need to maintain constant temperature and pH |
| liver in the enzymes lab provides | the enzyme-catalase |
| hydrogen peroxide in the enzymes lab | reactant (substrate) |
| water and oxygen in the enzymes lab | products |
| conservation of matter | atoms are not gained or lost during a chemical equation, they are just rearranged |
| reversible | a reaction that can go in both directions |
| coefficient | a number placed in front of a reactant to balance a chemical equation |
| subscript | in a chemical formula, describes the number of each type of atom in a compound |
| equilibrium | in a reversible reaction, this is when the rate of the forward reaction is the same as the rate of the reverse reaction and the amount of reactants and products do not change. |
| active site | the place on the enzyme where the substrate binds |
