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Enzymes

Enzymes. What is an enzyme?. Organic catalyst Protein molecule. Speed up chemical reactions by lowering the activation energy. Activation Energy. energy required to start all chemical reaction How can all reactions require energy, if some are considered exergonic/exothermic?.

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Enzymes

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  1. Enzymes

  2. What is an enzyme? • Organic catalyst • Protein molecule

  3. Speed up chemical reactions by lowering the activation energy

  4. Activation Energy • energy required to start all chemical reaction • How can all reactions require energy, if some are considered exergonic/exothermic?

  5. Induced-Fit Model

  6. Factors that affect enzyme functioning • Temperature • pH • Enzyme concentration • Substrate concentration • Cofactors/coenzymes • inhibitors

  7. Cofactors/Coenzymes

  8. Feedback Inhibition • End product controls action of enzyme • When end product binds to enzyme, there is a change of shape and enzyme no longer functions

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