Enzymes Word Scramble
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Term | Definition |
Endothermic reaction | A reaction that requires energy input |
Exothermic reaction | A reaction that gives off energy |
Enzymes (4 Characteristics) | -Lower activation energy of a reaction. -Increase the rate of the reaction. -Do not affect the overall (delta)G or (delta)H of the reaction -Are not changed or consumed in the course of the reaction |
Apoenzymes | Enzymes without their cofactors |
Holoenzymes | Enzymes that contain their cofactors |
Allosteric Enzymes | An enzymes that has multiple binding sites. The active site is present, as well as at least one other site that can regulate the availability of the active site |
Allosteric activators | An activator will result in a shift that makes the active site more available for binding to the substrate |
Allosteric inhibitors | An inhibitor will result in a shift that makes the active site less available for binding to the substrate. |
Feedback Inhibition | In feedback inhibition, the product may bind to an enzyme or enzymes that acted earlier in its biosynthetic pathway, thereby making the enzyme unavailable for other substrate to use. |
Competitive Inhibition [How can it be overcome?] | An enzyme inhibitor that binds to the active site, thus competing with substrate. [It can be overcome by adding more substrate] |
Noncompetitive Inhibition [How is it overcome?] | An enzyme inhibitor that binds to an allosteric site instead of the active site, which induces a change in enzyme conformation. [Cannot be overcome by adding more substrate. Can't be overcome at all] |
Irreversible Inhibition | An enzyme inhibitor that binds to the active site and makes it permanently unavailable. |
Zymogen/Proenzymes | An inactive enzyme precursor. |
Created by:
chri14
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