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

Why is Taq polymerase used in PCR (Polymerase Chain Reaction)?

It is cheaper than other DNA polymerases.

It can synthesize DNA at room temperature.

It is the only enzyme that can initiate DNA synthesis.

It is resistant to the high temperatures used in PCR.

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Verified step by step guidance

Understand the purpose of PCR: PCR is a technique used to amplify specific DNA sequences, making millions of copies of a particular segment of DNA.

Recognize the conditions of PCR: PCR involves repeated cycles of heating and cooling. The DNA is denatured at high temperatures (around 95°C), which separates the two strands.

Identify the role of DNA polymerase in PCR: DNA polymerase is the enzyme responsible for synthesizing new DNA strands by adding nucleotides to a primer annealed to the template strand.

Consider the properties of Taq polymerase: Taq polymerase is derived from the thermophilic bacterium Thermus aquaticus, which thrives in hot environments. This enzyme is stable and active at high temperatures, making it ideal for PCR.

Conclude why Taq polymerase is used: Taq polymerase's resistance to high temperatures allows it to remain active during the denaturation step of PCR, unlike other DNA polymerases that would denature and lose function at such temperatures.