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Enzymes

Enzymes. T he body is always looking for ways to save energy!. This is where enzymes come into play! Help the body do this!. What are they ? What properties do they have?. Enzymes. Why do we need them?. How do they work?. Enzymes – What are they?.

tanya-oconnor
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Enzymes

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  1. Enzymes

  2. The body is always looking for ways to save energy! This is where enzymes come into play! Help the body do this!

  3. What are they? What properties do they have? Enzymes Why do we need them? How do they work?

  4. Enzymes – What are they? Proteins that help chemical reactions to occur in living organisms Important Parts of a Chemical Reaction Reactants  Products

  5. Enzymes Specific (a different enzyme for each different type of reactions in the body) Properties

  6. Enzymes Specific Properties Increase rate of the reaction (help make reaction happen more often or faster)

  7. Enzymes Specific Increase rate of the reaction Properties Unchanged at the end of the reaction Reusable

  8. Enzymes Specific Properties Increase rate of the reaction Unchanged at the end of the reaction Reusable Why do you need them?

  9. Enzymes Reactions naturally occur too slow to maintain life! Need them Can’t increase temperatures in cells (fatal)

  10. How do enzymes work?

  11. Lock & Key Theory The enzyme needs to bind to the reactants called a substrate at the active site to work. Reactant Enzyme

  12. Let’s Do An Example

  13. Sucrose + H2O Glucose + Fructose

  14. Reactants Sucrose + H2O Glucose + Fructose Products

  15. For a reaction to occur the sucrose &water have to collide with enough energy to break the bond that holds them together to form the new products.

  16. For a reaction to occur the sucrose and water would have to collide with enough energy to break bonds and form the new products. This energy is the called activation energy.

  17. Energy Progress of reaction

  18. Energy Substrates or Reactants Progress of reaction

  19. Energy Products Substrates Progress of reaction

  20. Energy Products Substrates Progress of reaction

  21. Activation energy Energy Substrates Products Progress of reaction

  22. An Enzyme is like a short cut! Activation energy Enzymes reduce the Height aka reduce the activation energy Energy Substrates Products Progress of reaction

  23. What factors can affect the activity of enzymes? Based on these graphs, what conditions are generally the best for enzyme function?

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