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

33. The Organic Chemistry of Metabolic Pathways

Glycolysis Summary

Organic Chemistry

33. The Organic Chemistry of Metabolic Pathways

Glycolysis Summary

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Multiple Choice

In the glycolysis pathway, how many of the six glyceraldehyde-3-phosphate (G3P) molecules produced are used to synthesize one molecule of glucose?

Two

Four

One

Three

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Verified step by step guidance

Understand the glycolysis pathway: Glycolysis is the process of breaking down glucose into pyruvate, producing ATP and NADH in the process. It involves several steps and intermediates, including glyceraldehyde-3-phosphate (G3P).

Recognize the role of G3P: In glycolysis, glucose is initially converted into two molecules of G3P. This is a key intermediate in the pathway, which is further processed to eventually form pyruvate.

Consider the reverse process: To synthesize glucose from G3P, you need to consider gluconeogenesis, which is essentially the reverse of glycolysis. This process involves converting G3P back into glucose.

Calculate the requirement: Since glycolysis starts with one glucose molecule and produces two G3P molecules, synthesizing one glucose molecule from G3P would require reversing this process. Therefore, you need two G3P molecules to form one glucose molecule.

Conclude the synthesis: Based on the stoichiometry of the pathway, two molecules of G3P are required to synthesize one molecule of glucose, aligning with the principles of gluconeogenesis.