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 two chemical reactions are catalyzed by the enzyme RuBisCO in the Calvin cycle?

Phosphorylation and dephosphorylation of ribulose-1,5-bisphosphate

Carboxylation and oxygenation of ribulose-1,5-bisphosphate

Hydrogenation and dehydrogenation of ribulose-1,5-bisphosphate

Isomerization and epimerization of ribulose-1,5-bisphosphate

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Verified step by step guidance

Understand the role of RuBisCO: RuBisCO is an enzyme that plays a crucial role in the Calvin cycle, which is part of the photosynthetic process in plants. It catalyzes reactions involving ribulose-1,5-bisphosphate.

Identify the reactions catalyzed by RuBisCO: RuBisCO is known for catalyzing two specific reactions - carboxylation and oxygenation. These reactions are essential for the fixation of carbon dioxide and the photorespiration process.

Carboxylation process: In the Calvin cycle, RuBisCO catalyzes the carboxylation of ribulose-1,5-bisphosphate by adding a carbon dioxide molecule, forming two molecules of 3-phosphoglycerate. This is a key step in carbon fixation.

Oxygenation process: RuBisCO also catalyzes the oxygenation of ribulose-1,5-bisphosphate, where oxygen is added instead of carbon dioxide, leading to the formation of one molecule of 3-phosphoglycerate and one molecule of 2-phosphoglycolate. This process is part of photorespiration.

Differentiate from other reactions: The other options provided, such as phosphorylation, hydrogenation, and isomerization, are not catalyzed by RuBisCO in the Calvin cycle. Focus on the specific role of RuBisCO in carboxylation and oxygenation.