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

32. Lipids

Intro to Lipids

Organic Chemistry

32. Lipids

Intro to Lipids

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Multiple Choice

Why do fats store more energy than carbohydrates?

Fats are more soluble in water than carbohydrates.

Fats contain more oxygen atoms than carbohydrates.

Fats have a higher proportion of carbon-hydrogen bonds compared to carbohydrates.

Fats are broken down faster than carbohydrates.

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Verified step by step guidance

Begin by understanding the basic structure of fats and carbohydrates. Fats, also known as triglycerides, consist of a glycerol backbone attached to three fatty acid chains. Carbohydrates are composed of carbon, hydrogen, and oxygen atoms, typically in a ratio of 1:2:1.

Examine the types of bonds present in fats and carbohydrates. Fats have a higher proportion of carbon-hydrogen (C-H) bonds compared to carbohydrates. These C-H bonds are high-energy bonds, meaning they store a significant amount of energy.

Consider the oxidation state of the carbon atoms in fats and carbohydrates. In fats, the carbon atoms are more reduced, meaning they have more hydrogen atoms attached and fewer oxygen atoms. This reduced state allows fats to store more energy.

Analyze the energy release during metabolism. When fats are metabolized, the breaking of C-H bonds releases a large amount of energy. Carbohydrates, having more oxygen atoms, are partially oxidized and thus release less energy per gram when metabolized.

Conclude by understanding the biological significance. Fats serve as long-term energy storage molecules due to their dense energy content, while carbohydrates are used for quick energy needs. This is why fats store more energy than carbohydrates.