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 does photorespiration decrease the efficiency of photosynthesis in plants?

Photorespiration enhances the absorption of light energy, leading to an imbalance in the photosynthetic process.

Photorespiration increases the production of ATP and NADPH, which are not used efficiently in photosynthesis.

Photorespiration consumes oxygen and releases carbon dioxide, reducing the amount of carbon fixed by the Calvin cycle.

Photorespiration directly increases the rate of glucose production, which is not needed by the plant.

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Verified step by step guidance

Understand the process of photosynthesis: Photosynthesis is the process by which plants convert light energy into chemical energy, primarily in the form of glucose, using carbon dioxide and water. The Calvin cycle is a key part of this process, where carbon fixation occurs.

Define photorespiration: Photorespiration is a process that occurs in plants when the enzyme RuBisCO oxygenates RuBP, leading to the consumption of oxygen and release of carbon dioxide. This process is considered wasteful as it reduces the efficiency of photosynthesis.

Analyze the impact of photorespiration on photosynthesis: During photorespiration, instead of fixing carbon dioxide, RuBisCO fixes oxygen, leading to the production of a two-carbon compound that must be recycled by the plant, consuming ATP and releasing CO2.

Explain the reduction in carbon fixation: Since photorespiration consumes oxygen and releases carbon dioxide, it reduces the amount of carbon available for fixation in the Calvin cycle, thereby decreasing the overall efficiency of photosynthesis.

Conclude the effect on plant efficiency: As a result of photorespiration, less glucose is produced from the same amount of light energy, making the process less efficient for the plant's energy needs.