Enzymes - Enzymes A Protein Catalysts change rate of...

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Enzymes A. Protein Catalysts - change rate of reaction - speed up rate - don’t change direction of reaction - not consumed- used over and over - * C 6 H 12 O 6 + 6O 2 + 6H 2 O 6CO 2 + 12H 2 O + Energy (ATP) (to speed up reaction, heat or drastic pH change) - adding heat is not selective - adding or lower pH is not selective - Enzymes are selective B. Activation Energy - minimum energy required for a reaction to run. High activation energy low activation energy After heating Shifted to the Right ENERGY Small fraction of Larger fraction of Molecules can react molecules can react
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- Enzymes allow more substrate to react because it lowers energy needed to run reaction C. Enzyme- Substrate Complex E + S (s) → ES (s) → E + P (s) 1. Enzymes come together with substrates 2. reaction occurs 3. Enzyme returns to normal & Product is released D. Active sites 1. Lock and Key a. Enzyme: molecular lock b. Substrate: molecular key c. Enzymes bring substrates in close proximity d. Enzymes need to correctly orientated F. Induced Fit model 1. Site is larger than substrate
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