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Section 3B – Macromolecules (Proteins)

Learn how environmental conditions such as temperature, pH, substrate concentration, and enzyme concentration affect enzyme activity. Discover why enzymes denature in extreme conditions and how different enzymes perform optimally in specific environments. Explore the impact of acidic and thermophilic bacteria on enzyme function and understand how to determine optimal temperature and pH. Increase your knowledge on substrate-enzyme interactions and the relationship between substrate concentration and product formation. ####

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Section 3B – Macromolecules (Proteins)

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  1. Section 3B – Macromolecules (Proteins) Part 4: Enzymes (Part 3)

  2. Part 4: Enzymes Enzyme activity can be affected by various factors

  3. Part 4: Enzymes Objectives: Describe how different conditions impact enzyme function

  4. Part 4: Enzymes Enzymes, Optimal Conditions, and Substrate Concentrations An enzyme functions best at an optimal temperature and pH

  5. Part 4: Enzymes Enzymes, Optimal Conditions, and Substrate Concentrations Reaction rate slows if enzyme is placed in less-than-optimal conditions

  6. Part 4: Enzymes Enzymes, Optimal Conditions, and Substrate Concentrations When conditions disrupt enzyme structure, enzyme activity is affected

  7. Part 4: Enzymes Enzymes, Optimal Conditions, and Substrate Concentrations Temperature and pH too high or too low can cause an enzyme to denature and stop working

  8. Part 4: Enzymes Enzymes, Optimal Conditions, and Substrate Concentrations

  9. Part 4: Enzymes Enzymes, Optimal Conditions, and Substrate Concentrations Different enzymes function best in different conditions

  10. Part 4: Enzymes Enzymes, Optimal Conditions, and Substrate Concentrations Acidophilic bacteria

  11. Part 4: Enzymes Enzymes, Optimal Conditions, and Substrate Concentrations Thermophilic bacteria

  12. Part 4: Enzymes Enzymes, Optimal Conditions, and Substrate Concentrations Determine optimal temp and pH of the enzyme below. Would this enzyme exist in the body?

  13. Part 4: Enzymes Enzymes, Optimal Conditions, and Substrate Concentrations Increasing substrate concentration for an enzyme results in more product

  14. Part 4: Enzymes Enzymes, Optimal Conditions, and Substrate Concentrations Enzyme activity eventually levels off product produced substrate concentration

  15. Part 4: Enzymes Enzymes, Optimal Conditions, and Substrate Concentrations Active sites of all enzymes are filled, so excess substrates will not be catalyzed

  16. Part 4: Enzymes Enzymes, Optimal Conditions, and Substrate Concentrations Increasing enzyme concentration results in more product

  17. Part 4: Enzymes Enzymes, Optimal Conditions, and Substrate Concentrations Enzyme activity eventually levels off product produced enzyme concentration

  18. Part 4: Enzymes Enzymes, Optimal Conditions, and Substrate Concentrations All substrate molecules are bound to enzymes, so excess enzymes have no substrates

  19. Part 4: Enzymes Additional Reading Read pg 52-53 Complete Homework 3B-2

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