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

2. Molecular Representations

Functional Groups

Organic Chemistry

2. Molecular Representations

Functional Groups

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Multiple Choice

Which functional group is responsible for trapping energy in chlorophyll molecules?

Porphyrin ring

Carbonyl group

Hydroxyl group

Amino group

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Verified step by step guidance

Understand the structure of chlorophyll: Chlorophyll is a complex molecule that plays a crucial role in photosynthesis. It contains a porphyrin ring, which is a large, planar, and cyclic structure.

Identify the role of the porphyrin ring: The porphyrin ring in chlorophyll is responsible for absorbing light energy. It contains a magnesium ion at its center, which is essential for capturing light energy.

Differentiate between functional groups: The porphyrin ring is distinct from other functional groups such as carbonyl, hydroxyl, and amino groups. These groups have different structures and functions in organic molecules.

Recognize the importance of the porphyrin ring: The ability of the porphyrin ring to trap energy is due to its conjugated double bond system, which allows for the delocalization of electrons and efficient absorption of light.

Conclude the identification: Based on the structure and function of chlorophyll, the porphyrin ring is the functional group responsible for trapping energy, distinguishing it from other functional groups listed in the options.