Analyzing Enzyme Graphs And Diagrams

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This flashcard set looks at analyzation of enzyme graphs and their diagrams.

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8 Terms

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Competitive Inhibitor
Competitive Inhibitor
The rate of reaction is reduced as the inhibitor competes with the substrate, Maximum rate can be achieved if substrate levels are high enough
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Non-Competitive Inhibitor
Non-Competitive Inhibitor
The rate of reaction is reduced as the enzyme's active site is altered, Maximum rate cannot be achieved by raising substrate levels
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Gibbs Free Energy Graph
Gibbs Free Energy Graph
The Gibbs free energy graph shows whether or not a reaction is spontaneous-- whether it is exergonic or endergonic. Therefore, if the reaction goes from higher free energy to lower free energy, there will be a negative ΔG, and the reaction will be spontaneous. A positive ΔG indicates that the reaction is endergonic, or that it requires energy to go from reactants to products.
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Temperature Graph
Temperature Graph
As the temperature increases so do the rate of enzyme activity. Optimum activity is reached at the enzyme's optimum temperature. A continued increase in temperature results in a sharp decrease in activity as the enzyme's active site changes shape. It is now denatured.
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pH Graph
pH Graph
In the graph above, as the pH increases so do the rate of enzyme activity. Optimum activity is reached at the enzyme’s optimum pH, pH 8 in this example. A continued increase in pH results in a sharp decrease in activity as the enzyme’s active site changes shape. It is now denatured.
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Substrate Graph
Substrate Graph
As the substrate concentration increases so do the rate of enzyme activity. An optimum rate is reached at the enzyme’s optimum substrate concentration. A continued increase in substrate concentration results in the same activity as there are not enough enzyme molecules available to break down the excess substrate molecules.
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Competitive Inhibitor Diagram
Competitive Inhibitor Diagram
Preventing the substrate
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Non Competitive Inhibitor Diagram
Non Competitive Inhibitor Diagram
Reducing the activity