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

Organic Chemistry Reactions

Organic Chemistry

3. Acids and Bases

Organic Chemistry Reactions

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Multiple Choice

Which of the following reactions is characteristic of the light reactions in photosynthesis?

Oxidation of water to release oxygen

Fixation of carbon dioxide into glucose

Conversion of glucose to pyruvate

Reduction of NADP+ to NADPH

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Verified step by step guidance

Understand the context of photosynthesis: Photosynthesis consists of two main stages, the light reactions and the Calvin cycle. The light reactions occur in the thylakoid membranes of chloroplasts and are responsible for converting light energy into chemical energy.

Identify the key processes in the light reactions: The light reactions involve the absorption of light by chlorophyll, leading to the generation of ATP and NADPH, and the splitting of water molecules (photolysis) to release oxygen.

Examine the options given: The question provides four options related to photosynthesis. We need to determine which one is characteristic of the light reactions.

Analyze each option: - Oxidation of water to release oxygen: This is a key process in the light reactions where water is split to release oxygen, electrons, and protons. - Fixation of carbon dioxide into glucose: This occurs in the Calvin cycle, not the light reactions. - Conversion of glucose to pyruvate: This is part of cellular respiration, not photosynthesis. - Reduction of NADP+ to NADPH: This occurs during the light reactions as electrons are transferred to NADP+.

Conclude which option is characteristic of the light reactions: Based on the analysis, the oxidation of water to release oxygen is a characteristic process of the light reactions in photosynthesis.