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

3. Acids and Bases

Reaction Mechanism

Organic Chemistry

3. Acids and Bases

Reaction Mechanism

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Multiple Choice

In the context of a photosystem, what is the primary role of the reaction center?

To facilitate the transport of electrons to the stroma

To absorb light and transfer energy to the antenna complex

To store energy in the form of ATP

To convert light energy into chemical energy

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Verified step by step guidance

Understand the structure of a photosystem: A photosystem is composed of an antenna complex and a reaction center. The antenna complex captures light energy and funnels it to the reaction center.

Identify the role of the reaction center: The reaction center is crucial in converting the absorbed light energy into chemical energy. It contains specialized chlorophyll molecules that undergo a redox reaction.

Explore the process of energy conversion: When light energy is absorbed, it excites electrons in the chlorophyll molecules of the reaction center. These excited electrons are transferred to an electron transport chain.

Clarify the outcome of electron transfer: The transfer of electrons initiates a series of reactions that ultimately lead to the synthesis of ATP and NADPH, which are essential for the Calvin cycle in photosynthesis.

Summarize the primary role: The primary role of the reaction center is to convert light energy into chemical energy, facilitating the process of photosynthesis by providing the necessary energy carriers (ATP and NADPH).