| Term | Definition |
|---|
| energy | the capacity to perform work |
| kinetic energy | energy of motion |
| potential energy | stored energy that an object possesses as a result of its location or structure |
| thermodynamics | study of energy transformations that occur in a collection of matter |
| 1st law of thermodynamics | the total amount of energy in the universe is constant |
| 2nd law of thermodynamics | energy conversions reduce the order of the universe and increase its entropy |
| entropy | the amount of disorder in a system |
| endergonic reactions | reactions that require a net input of energy |
| exergonic reactions | chemical reactions that release energy |
| cellular metabolism | the sum of all the working cells carrying out endergonic and exergonic reactions |
| ATP | a molecule that contains a nitrogen-contaning compound callled adenine, a 5 carbon sugar called ribose and three phosphate groups. |
| phosphorylation | the process of adding a phosphate group to ADP to make ATP; cells use the energy released by ATP to power essential activities |
| energy of activation | energy barrier with amount of energy that reactants must absorb to start a chemical reaction |
| enzyme | A protein serving as a catalyst, a chemical agent that changes the rate of a reaction without being consumed by the reaction |
| lysosomes | filled with enzymes used to break down food into particles that can be used |
Combine with other sets
Share on Facebook
Share on MySpace