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

Sigma and Pi Bonds

Organic Chemistry

1. A Review of General Chemistry

Sigma and Pi Bonds

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Multiple Choice

In the context of molecular interactions, what type of bond is typically broken when mRNA separates from the DNA template during transcription?

Sigma bond

Ionic bond

Hydrogen bond

Pi bond

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Verified step by step guidance

Understand the process of transcription: Transcription is the process by which the information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA).

Identify the interaction between DNA and mRNA: During transcription, mRNA is synthesized based on the DNA template strand. The mRNA temporarily pairs with the DNA template through complementary base pairing.

Recognize the type of bond involved: The base pairing between DNA and mRNA involves hydrogen bonds. These are weak interactions that occur between the nitrogenous bases of the nucleotides.

Determine what happens during separation: When mRNA separates from the DNA template, the hydrogen bonds between the complementary bases are broken. This allows the mRNA to detach and the DNA to re-anneal or remain single-stranded.

Conclude the type of bond broken: Since the interaction between mRNA and DNA involves hydrogen bonds, these are the bonds that are typically broken when mRNA separates from the DNA template during transcription.