16004476
Description
Flashcards by E.M. Flood, updated more than 1 year ago
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Created by E.M. Flood
about 6 years ago
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| Question | Answer |
| Explain what a chemical reaction is. | A process when a set of chemicals changes/transforms into another |
| Elements/compounds that enter a chemical reaction are _____. Those produced by a chemical reaction are _____. | reactants; products |
| What is activation energy? Give an example. | Energy that is involved with chemical reactions regardless of whether the overall chemical reaction releases or absorbs energy; burning paper with a match |
| What is a catalyst? | A substances that speeds up the rate of a chemical reaction by lowering a reaction activation's energy |
| What is an enzyme? | A protein that acts as biological catalysts |
| What do enzymes do in our bodies? | They speed up chemical reactions that take place in cells by lowering activation energy |
| Explain how an enzyme works during a chemical reaction | An enzyme allows reactants to bond by providing a site where these reactants can be brought together to react. A site reduces the energy needed for a reaction. |
| What are substrates? | Reactants of enzyme-catalyzed reactions |
| What would happen to the enzymatic reaction if the enzyme lost its shape? | The enzyme would not work the same way and might become useless altogether |
| What are factors that regulate enzyme activity? | Temperature, pH, regulatory molecules |
| Define a catalyst | a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change. |
| Define an active site | the specific region of an enzyme where a substrate binds and catalysis takes place or where chemical reaction occurs. |
| What is an enzyme-substrate complex? | The intermediate formed when a substrate molecule interacts with the active site of an enzyme |
| What is activation energy? | the energy which must be provided with potential reactants to result in a chemical reaction |
| What is an exergonic reaction? What's an example? | When energy is released; combustion |
| What's an endergonic reaction? What's an example? | Energy is absorbed; protein synthesis |
| What's the difference between the two reactions? | Endergonic builds up, exergonic breaks down |
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