Biology ch 6, 7 & 8
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Created by:
blake39180 on October 21, 2010
Subjects:
metabolism, photosynthesis, & chem. energy
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20 terms
Terms | Definitions |
|---|---|
 Energy | the capacity to do work. |
| Entropy | a measure of how much energy of a particular system has become dispersed. |
| Reaction | the process by which such chemical changes occur. |
| Reactants | (aka substrates), molecules that enter a reaction. |
| Products | molecules that remain at the reaction's end. |
| Endergonic | energy goes into it. |
| Exergonic | energy goes out of it |
| Solar energy | Energy from the sun. |
| Enzyme | catalysts, which are molecules that make chemical reactions proceed much faster than they would on their own. |
| Activation energy | the minimum amount of energy required to start a chemical reaction. |
| Denaturization | to alter the protein's structure chemically causing it to lose some or all of its specific characteristics. |
| Metabolic pathways | any series of enzyme-mediated reactions by which a cell builds, rearranges, or breaks down an organic substance. |
| Feedback inhibition | the end product of a series of enzymatic reactions inhibits the first enzyme in the series. |
| Allosteric site | a region of an enzyme other than the active site that can bind regulatory molecules. |
| Biosynthetic (anabolic) | pathways that build molecules from smaller ones. |
| Degradative (catabolic) | pathways that break molecules apart.. |
| Electron Transfer Chain | energy is released in amounts that cells can harness for cellular work, such as muscle contraction or active transport. |
| Oxidation Reduction Reaction | a molecule accepts electrons (it becomes reduced) from another molecule (which becomes oxidized). |
| Bioluminescence | chemical energy is converted into light energy. |
| Wavelength | the distance between the crests of two successive waves of light; also the measurement of light (nm). |
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