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

Previous problemNext problem

Struggling with Organic Chemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

In the context of organic chemistry, why is sympatric speciation less likely to occur than allopatric speciation?

Sympatric speciation is driven by environmental changes, which are rare.

Allopatric speciation occurs in the presence of chemical barriers, making it more frequent.

Sympatric speciation involves genetic divergence without physical separation, which is less likely due to gene flow.

Sympatric speciation requires geographical isolation, which is less common.

Previous problemNext problem

Verified step by step guidance

Understand the concept of speciation: Speciation is the process by which new distinct species evolve. It can occur through various mechanisms, including sympatric and allopatric speciation.

Define sympatric speciation: Sympatric speciation occurs when a new species arises from a single ancestral species while inhabiting the same geographic region. This process involves genetic divergence without physical separation.

Define allopatric speciation: Allopatric speciation occurs when a population is divided by a geographical barrier, leading to genetic divergence due to physical separation. This is often more common because physical barriers can effectively limit gene flow.

Explore the role of gene flow: Gene flow refers to the transfer of genetic material between populations. In sympatric speciation, gene flow can hinder genetic divergence because the populations are not physically separated, making it less likely to occur.

Compare the likelihood of sympatric vs. allopatric speciation: Allopatric speciation is more frequent because physical barriers can effectively prevent gene flow, allowing for genetic divergence. Sympatric speciation is less likely because it requires genetic divergence without the aid of physical separation, which is challenging due to ongoing gene flow.