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 DNA replication, what does semi-conservative replication mean?

Each new DNA molecule consists of two new strands.

Each new DNA molecule is a random mix of original and new strands.

Each new DNA molecule consists of one original strand and one new strand.

Each new DNA molecule consists of two original strands.

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Verified step by step guidance

Understand the concept of DNA replication: DNA replication is the process by which a cell duplicates its DNA before cell division, ensuring that each new cell receives a complete set of genetic information.

Learn about the semi-conservative model: The semi-conservative model of DNA replication suggests that each of the two strands of the DNA helix serves as a template for the synthesis of a new complementary strand.

Visualize the replication process: During replication, the double-stranded DNA unwinds, and each original strand pairs with new nucleotides to form a new strand, resulting in two DNA molecules, each with one original and one new strand.

Compare with other models: Contrast the semi-conservative model with conservative replication (where the original DNA molecule is conserved and a completely new molecule is synthesized) and dispersive replication (where the DNA is fragmented and each new molecule is a mix of old and new DNA segments).

Conclude with the correct understanding: Semi-conservative replication means that each new DNA molecule consists of one original strand and one new strand, maintaining genetic continuity across generations.