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Enzymes

Enzymes . Chemical Reaction. Occurs when bonds are broken or formed to create a new substance. Reactants Products PB + J + Bread  PB&J Sandwich. Metabolism. Sum of all chemical reactions in living things.

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Enzymes

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  1. Enzymes

  2. Chemical Reaction Occurs when bonds are broken or formed to create a new substance Reactants Products PB + J + Bread  PB&J Sandwich

  3. Metabolism Sum of all chemical reactions in living things

  4. Cells regulate chemical reactions through the use of proteins called ENZYMES

  5. Characteristics of Enzymes #1 Enzymes are biological catalysts

  6. What is a Catalyst? Catalysts speed up chemical reactions without being involved Ex: What do you do to help sugar dissolve faster in tea?

  7. Example of Enzymes as CatalystsSPIT ~ SALIVA

  8. Enzymes and Reactions

  9. Characteristics of Enzymes #2 Enzymes are site specific, only react at certain location One enzyme = One job

  10. How Enzymes Work

  11. What does this mean?????

  12. Lactose Intolerance

  13. Environmental Effects on Enzymes • Temperature • High Temperatures can denature enzymes • Denature means lose shape.

  14. Environmental Effects on Enzymes • Temperature • Low Temperatures cause enzymes to move slowly • Decreasing enzyme activity

  15. Environmental Effects on Enzymes • pH • Dramatic changes in the pH of a solution can denature an enzyme • Decreasing enzyme activity

  16. Digestion Nerves Digestion Papaya’s

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