Table of contents

1. A Review of General Chemistry5h 5m
2. Molecular Representations1h 14m
3. Acids and Bases2h 46m
4. Alkanes and Cycloalkanes4h 17m
5. Chirality3h 39m
6. Thermodynamics and Kinetics1h 22m
7. Substitution Reactions1h 48m
8. Elimination Reactions2h 30m
9. Alkenes and Alkynes2h 9m
10. Addition Reactions3h 19m
11. Radical Reactions1h 58m
12. Alcohols, Ethers, Epoxides and Thiols2h 42m
13. Alcohols and Carbonyl Compounds2h 17m
14. Synthetic Techniques1h 26m
15. Analytical Techniques:IR, NMR, Mass Spect7h 3m
16. Conjugated Systems6h 13m
17. Ultraviolet Spectroscopy51m
18. Aromaticity2h 34m
19. Reactions of Aromatics: EAS and Beyond5h 1m
20. Phenols55m
21. Aldehydes and Ketones: Nucleophilic Addition4h 56m
22. Carboxylic Acid Derivatives: NAS2h 51m
23. The Chemistry of Thioesters, Phophate Ester and Phosphate Anhydrides1h 10m
24. Enolate Chemistry: Reactions at the Alpha-Carbon1h 53m
25. Condensation Chemistry2h 9m
26. Amines1h 43m
27. Heterocycles2h 0m
28. Carbohydrates5h 53m
29. Amino Acids4h 20m
30. Peptides and Proteins2h 42m
31. Catalysis in Organic Reactions1h 30m
32. Lipids 2h 50m
33. The Organic Chemistry of Metabolic Pathways2h 52m
34. Nucleic Acids1h 32m
35. Transition Metals6h 14m
36. Synthetic Polymers1h 49m

31. Catalysis in Organic Reactions

Introduction to Catalysis

Organic Chemistry

31. Catalysis in Organic Reactions

Introduction to Catalysis

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Multiple Choice

Why do conditions like temperature and pH affect the rate of an enzyme-catalyzed reaction?

They increase the enzyme's molecular weight, enhancing its activity.

They alter the enzyme's active site, affecting substrate binding.

They provide energy for the reaction, making it spontaneous.

They change the substrate concentration, increasing reaction rate.

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Verified step by step guidance

Understand that enzymes are proteins that catalyze biochemical reactions by lowering the activation energy required for the reaction to proceed.

Recognize that the active site of an enzyme is a specific region where the substrate binds, and this site is highly sensitive to environmental conditions such as temperature and pH.

Learn that changes in temperature can affect the kinetic energy of molecules, potentially altering the shape of the enzyme's active site and thus its ability to bind substrates effectively.

Explore how pH can influence the ionization state of amino acids in the enzyme's active site, which can lead to changes in the enzyme's structure and function, affecting substrate binding.

Consider that while temperature and pH do not directly change the enzyme's molecular weight, they can significantly impact the enzyme's conformation and activity, thereby affecting the rate of the enzyme-catalyzed reaction.