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

Which of the following best explains how artificial selection provides evidence for evolution by natural selection?

Artificial selection indicates that environmental factors have no impact on species development.

Artificial selection shows that all traits in organisms are inherited without variation.

Artificial selection proves that natural selection does not occur in nature.

Artificial selection demonstrates that selective pressures can lead to changes in species over time.

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Verified step by step guidance

Understand the concept of artificial selection: Artificial selection is a process where humans selectively breed organisms to enhance or modify specific traits. This is similar to natural selection, where environmental pressures lead to changes in species over time.

Compare artificial selection to natural selection: In natural selection, environmental factors determine which traits are advantageous, leading to changes in species. In artificial selection, humans determine which traits are desirable, but the underlying mechanism of selection is similar.

Identify the role of selective pressures: Both artificial and natural selection involve selective pressures that influence which traits become more common in a population. In artificial selection, these pressures are human-imposed, while in natural selection, they are environmental.

Recognize the evidence for evolution: Artificial selection provides evidence for evolution by demonstrating that selective pressures, whether natural or artificial, can lead to changes in species over time. This supports the idea that natural selection can drive evolutionary change.

Conclude with the correct explanation: The correct explanation is that artificial selection demonstrates that selective pressures can lead to changes in species over time, providing evidence for the process of evolution by natural selection.