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

1. A Review of General Chemistry

Intro to Organic Chemistry

Organic Chemistry

1. A Review of General Chemistry

Intro to Organic Chemistry

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Multiple Choice

In the context of organic chemistry and environmental adaptation, how did the peppered moth population become mostly dark-colored during the Industrial Revolution?

The dark-colored moths were able to photosynthesize more efficiently than light-colored moths.

The dark-colored moths were more attractive to predators, leading to their increased population.

The dark-colored moths had a survival advantage due to pollution darkening tree bark.

The dark-colored moths were selectively bred by humans for their color.

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Verified step by step guidance

Understand the concept of natural selection: Natural selection is a process where organisms better adapted to their environment tend to survive and produce more offspring. This concept is key to understanding the change in the peppered moth population.

Identify the environmental change: During the Industrial Revolution, pollution caused tree bark to darken due to soot and other pollutants. This environmental change is crucial to the survival advantage of the dark-colored moths.

Analyze the survival advantage: The dark-colored moths had a survival advantage because they were better camouflaged against the darkened tree bark, making them less visible to predators compared to the light-colored moths.

Consider the impact on population: As a result of the survival advantage, the dark-colored moths were less likely to be eaten by predators, allowing them to survive longer and reproduce more, leading to an increase in their population.

Reflect on the role of human activity: The change in moth population was not due to selective breeding by humans or any direct human intervention in moth coloration, but rather an indirect consequence of industrial pollution affecting the environment.